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Computer running incredibly slowly - could it be malware, virus??


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#1 jpwessex

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Posted 15 May 2012 - 01:13 PM

Hi from the UK.

Our family PC has started to behave very strangely and takes an age to respond to any command, prog start, connect to broadband or even to simply start!

We're running on XP with Kaspersky Anti Virus.

I've run virus scans and it reports all is OK which is just confusing us as we're sure there is a problem that perhaps Kaspersky isn't identifying or picking up. We have also tried running 'Quick Care' which reports some issues, repairs them and for a short while, things seem to improve....followed by yet more frustration when the PC slows to, well, slower than a crawl.

Any assistance would of course be very much appreciated.

Josh

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#2 TheShooter93

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Posted 15 May 2012 - 04:42 PM

Hi,

After performing these scans, enter the results in your next post and also update me on the status of the PC.

Note: You may have to perform some or all of the following in Safe Mode With Networking, depending on if you have internet access while in the normal Windows environment. If you still don't have internet access in Safe Mode With Networking, you will need to download the installers onto a flash drive from a working computer and transfer them to the problem PC.

Also, if you have any of the following programs already installed on your machine, download the latest version along with updates, then run the scan.

================================================================================

Download Security Check by screen317 from here or here.
  • Save it to your Desktop.
  • Double click SecurityCheck.exe and follow the onscreen instructions inside of the black box.
  • A Notepad document should open automatically called checkup.txt; please post the contents of that document.

================================================================================

Please download and scan with SUPERAntiSpyware Free
  • Double-click SUPERAntiSypware.exe and use the default settings for installation.
    For instructions with screenshots, please refer to the How to use SUPERAntiSpyware to scan and remove malware from your computer Guide.
  • An icon will be created on your desktop. Double-click that icon to launch the program.
  • If it will not start, go to Start > All Prgrams > SUPERAntiSpyware and click on Alternate Start.
  • If asked to update the program definitions, click "Yes". If not, update the definitions before scanning by selecting "Check for Updates". (If you encounter any problems while downloading the updates, manually download them from here. Double-click on the hyperlink for Download Installer and save SASDEFINITIONS.EXE to your desktop. Then double-click on SASDEFINITIONS.EXE to install the definitions.)
  • In the Main Menu, click the Preferences... button.
  • Click the "General and Startup" tab, and under Start-up Options, make sure "Start SUPERAntiSpyware when Windows starts" box is unchecked.
  • Click the "Scanning Control" tab, and under Scanner Options, make sure the following are checked (leave all other options as they are set):
    • Close browsers before scanning.
    • Scan for tracking cookies.
    • Terminate memory threats before quarantining.
  • Click the "Close" button to leave the Control Center screen.
  • Back on the main screen, under "Select Scan Type" check the box for Complete Scan.
  • If your computer is badly infected, be sure to check the box next to Enable Rescue Scan (Highly Infected Systems ONLY).
  • Click the Scan your computer... button.
  • After the scan is complete, a Scan Summary box will appear with potentially harmful items that were detected. Click "OK".
  • Make sure everything has a checkmark next to it and click "Next".
  • A notification will appear that "Quarantine and Removal is Complete". Click "OK" and then click the "Finish" button to return to the main menu.
  • If asked if you want to reboot, click "Yes" and reboot normally.

To retrieve the scan log after reboot, launch SUPERAntiSpyware again.
  • Click the View Scan Logs button at the bottom.
  • This will open the Scanner Logs Window.
  • Click on the log to highlight it and then click on View Selected Log to open it.
  • Copy and paste the scan log results in your next reply.
-- Some types of malware will disable security tools. If SUPERAntiSpyware will not install, please refer to these instructions for using the SUPERAntiSpyware Installer. If SUPERAntiSpyware is already installed but will not run, then follow the instructions for using RUNSAS.EXE to launch the program.
================================================================================

Please download Malwarebytes Anti-Malware Posted Image and save it to your desktop.
  • Important!! When you save the mbam-setup file, rename it to something random (such as 123abc.exe) before beginning the download.
Malwarebytes may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you. Temporarily disable such programs or permit them to allow the changes.

  • Make sure you are connected to the Internet and double-click on the renamed file to install the application.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • Malwarebytes will automatically start and you will be asked to update the program before performing a scan.
  • If an update is found, the program will automatically update itself. Press the OK button and continue.
  • If you cannot update Malwarebytes or use the Internet to download any files to the infected computer, manually update the database by following the instructions in FAQ Section A: 4. Issues.
  • Under the Scanner tab, make sure the "Perform Quick Scan" option is selected.
  • Click on the Scan button.
  • When finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  • Click OK to close the message box, then click the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked and then click Remove Selected.
  • When removal is completed, a log report will open in Notepad.
  • The log is automatically saved and can be viewed by clicking the Logs tab.
  • Copy and paste the contents of that report in your next reply. Be sure to post the complete log to include the top portion which shows the database version and your operating system.
  • Exit Malwarebytes when done.
Note: If Malwarebytes encounters a file that is difficult to remove, you will be asked to reboot your computer so it can proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot normally will prevent Malwarebytes from removing all the malware.

-- Some types of malware will target Malwarebytes and other security tools to keep them from running properly. If that's the case, go to Start > All Programs > Malwarebytes Anti-Malware folder > Tools > click on Malwarebytes Chameleon and follow the onscreen instructions. The Chameleon folder can be accessed by opening the program folder for Malwarebytes Anti-Malware (normally C:\Program Files\Malwarebytes' Anti-Malware or C:\Program Files (x86)\Malwarebytes' Anti-Malware).
================================================================================

Please download GMER from one of the following locations and save it to your desktop:
  • Main Mirror
    This version will download a randomly named file (Recommended)
  • Zipped Mirror
    This version will download a zip file you will need to extract first. If you use this mirror, please extract the zip file to your desktop.
  • Disconnect from the Internet and close all running programs.
  • Temporarily disable any real-time active protection so your security programs will not conflict with gmer's driver.
  • Double-click on the randomly named GMER file (i.e. n7gmo46c.exe) and allow the gmer.sys driver to load if asked.
  • Note: If you downloaded the zipped version, extract the file to its own folder such as C:\gmer and then double-click on gmer.exe.

    Posted Image
  • GMER will open to the Rootkit/Malware tab and perform an automatic quick scan when first run. (do not use the computer while the scan is in progress)
  • If you receive a WARNING!!! about rootkit activity and are asked to fully scan your system...click NO.
  • Now click the Scan button. If you see a rootkit warning window, click OK.
  • When the scan is finished, click the Save... button to save the scan results to your Desktop. Save the file as gmer.log.
  • Click the Copy button and paste the results into your next reply.
  • Exit GMER and be sure to re-enable your anti-virus, Firewall and any other security programs you had disabled.
-- If you encounter any problems, try running GMER in safe mode.
-- If GMER crashes or keeps resulting in a BSODs, uncheck Devices on the right side before scanning
.

CCNA R&SCCNA Security | Network+  |  B.S. - Information Technology | Security Engineer

If I am helping you and have not replied within 48 hours, please send me a private message.


#3 jpwessex

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Posted 26 May 2012 - 08:41 AM

Hi. Thanks for the fast response and apologies for my slow one. I was called away just after posting to the forum and am just back.

Anyway, I've followed yr instructions and post the following logs

Checkup

Results of screen317's Security Check version 0.99.38
Windows XP Service Pack 3 x86
Internet Explorer 8
``````````````````````````````
Antivirus/Firewall Check:

Windows Firewall Enabled!
Kaspersky Anti-Virus
Antivirus up to date!
```````````````````````````````
Anti-malware/Other Utilities Check:

MVPS Hosts File
Gmer
Java™ 6 Update 11
Java™ 6 Update 7
Java version out of date!
Adobe Flash Player 9.0.124.0 Flash Player out of Date!
Adobe Reader 9 Adobe Reader out of date!
````````````````````````````````
Process Check:
objlist.exe by Laurent

Kaspersky Lab Kaspersky Anti-Virus 2012 avp.exe
Kaspersky Lab Kaspersky Anti-Virus 2012 klwtblfs.exe
``````````End of Log````````````

===================

Super anti spyware

SUPERAntiSpyware Scan Log
http://www.superantispyware.com

Generated 05/24/2012 at 10:50 PM

Application Version : 5.0.1150

Core Rules Database Version : 8643
Trace Rules Database Version: 6455

Scan type : Complete Scan
Total Scan Time : 01:55:45

Operating System Information
Windows XP Professional 32-bit, Service Pack 3 (Build 5.01.2600)
Administrator

Memory items scanned : 423
Memory threats detected : 0
Registry items scanned : 36071
Registry threats detected : 0
File items scanned : 83862
File threats detected : 67

Adware.Tracking Cookie
C:\Documents and Settings\Family\Cookies\family@ad.yieldmanager[1].txt [ /ad.yieldmanager ]
C:\Documents and Settings\Family\Cookies\family@ad.yieldmanager[2].txt [ /ad.yieldmanager ]
C:\Documents and Settings\Family\Cookies\family@ad.yieldmanager[3].txt [ /ad.yieldmanager ]
C:\Documents and Settings\Family\Cookies\family@ads.ccisystems[2].txt [ /ads.ccisystems ]
C:\Documents and Settings\Family\Cookies\family@ads.clicmanager[1].txt [ /ads.clicmanager ]
C:\Documents and Settings\Family\Cookies\family@ads.zzounds[1].txt [ /ads.zzounds ]
C:\Documents and Settings\Family\Cookies\family@adserv.crossrhythms.co[2].txt [ /adserv.crossrhythms.co ]
C:\Documents and Settings\Family\Cookies\family@atwola[1].txt [ /atwola ]
C:\Documents and Settings\Family\Cookies\family@bizrate[1].txt [ /bizrate ]
C:\Documents and Settings\Family\Cookies\family@caloriecount.about[2].txt [ /caloriecount.about ]
C:\Documents and Settings\Family\Cookies\family@country-catalogue.co[2].txt [ /country-catalogue.co ]
C:\Documents and Settings\Family\Cookies\family@e-2dj6wgmywjd5gbp.stats.esomniture[2].txt [ /e-2dj6wgmywjd5gbp.stats.esomniture ]
C:\Documents and Settings\Family\Cookies\family@e-2dj6wml4wkcpsdo.stats.esomniture[1].txt [ /e-2dj6wml4wkcpsdo.stats.esomniture ]
C:\Documents and Settings\Family\Cookies\family@e-2dj6wmmicldjcfo.stats.esomniture[1].txt [ /e-2dj6wmmicldjcfo.stats.esomniture ]
C:\Documents and Settings\Family\Cookies\family@eas.apm.emediate[2].txt [ /eas.apm.emediate ]
C:\Documents and Settings\Family\Cookies\family@essex.police[2].txt [ /essex.police ]
C:\Documents and Settings\Family\Cookies\family@fl01.ct2.comclick[1].txt [ /fl01.ct2.comclick ]
C:\Documents and Settings\Family\Cookies\family@homeserve.122.2o7[1].txt [ /homeserve.122.2o7 ]
C:\Documents and Settings\Family\Cookies\family@invitemedia[1].txt [ /invitemedia ]
C:\Documents and Settings\Family\Cookies\family@lfstmedia[2].txt [ /lfstmedia ]
C:\Documents and Settings\Family\Cookies\family@media6degrees[1].txt [ /media6degrees ]
C:\Documents and Settings\Family\Cookies\family@media6degrees[3].txt [ /media6degrees ]
C:\Documents and Settings\Family\Cookies\family@moodle.tendring-tech.essex.sch[1].txt [ /moodle.tendring-tech.essex.sch ]
C:\Documents and Settings\Family\Cookies\family@paypal.112.2o7[1].txt [ /paypal.112.2o7 ]
C:\Documents and Settings\Family\Cookies\family@paypal.112.2o7[2].txt [ /paypal.112.2o7 ]
C:\Documents and Settings\Family\Cookies\family@server.iad.liveperson[6].txt [ /server.iad.liveperson ]
C:\Documents and Settings\Family\Cookies\family@server.iad.liveperson[9].txt [ /server.iad.liveperson ]
C:\Documents and Settings\Family\Cookies\family@stats.paypal[2].txt [ /stats.paypal ]
C:\Documents and Settings\Family\Cookies\family@tacoda.at.atwola[1].txt [ /tacoda.at.atwola ]
C:\Documents and Settings\Family\Cookies\family@thefind.co[1].txt [ /thefind.co ]
C:\Documents and Settings\Family\Cookies\family@tracking.dc-storm[2].txt [ /tracking.dc-storm ]
C:\Documents and Settings\Family\Cookies\family@uk.at.atwola[2].txt [ /uk.at.atwola ]
C:\Documents and Settings\Family\Cookies\family@www.3pintracking[1].txt [ /www.3pintracking ]
C:\Documents and Settings\Family\Cookies\family@www.country-catalogue.co[1].txt [ /www.country-catalogue.co ]
C:\Documents and Settings\Family\Cookies\family@www.country-catalogue.co[2].txt [ /www.country-catalogue.co ]
C:\Documents and Settings\Family\Cookies\family@www.country-catalogue.co[3].txt [ /www.country-catalogue.co ]
C:\Documents and Settings\Family\Cookies\family@www.essex.police[1].txt [ /www.essex.police ]
C:\Documents and Settings\Family\Cookies\family@www.googleadservices[1].txt [ /www.googleadservices ]
C:\Documents and Settings\Family\Cookies\family@www.nhsdiscounts[1].txt [ /www.nhsdiscounts ]
C:\Documents and Settings\Family\Cookies\family@xiti[1].txt [ /xiti ]
C:\Documents and Settings\Family\Cookies\family@yadro[2].txt [ /yadro ]
C:\Documents and Settings\Family\Cookies\XZO40S6R.txt [ /ads.pubmatic.com ]
C:\Documents and Settings\Family\Cookies\DMTP8F7K.txt [ /2o7.net ]
C:\Documents and Settings\Family\Cookies\MQ4TI6G3.txt [ /www.googleadservices.com ]
C:\Documents and Settings\Family\Cookies\5VPXKDAM.txt [ /accounts.youtube.com ]
C:\Documents and Settings\Family\Cookies\VZPAVY3O.txt [ /www.nhsdiscounts.com ]
C:\Documents and Settings\Family\Cookies\7TFVWRQV.txt [ /thevault.nhsdiscounts.com ]
C:\Documents and Settings\Family\Cookies\U4SN6QKZ.txt [ /xm.xtendmedia.com ]
C:\Documents and Settings\Family\Cookies\01IH1FWT.txt [ /www.googleadservices.com ]
C:\Documents and Settings\Family\Cookies\I48FR6JS.txt [ /clickfuse.com ]
C:\Documents and Settings\Family\Cookies\I976U8AB.txt [ /ads.bleepingcomputer.com ]
C:\Documents and Settings\Family\Cookies\LRZT9LJS.txt [ /at.atwola.com ]
C:\Documents and Settings\Family\Cookies\SC4BT9J0.txt [ /liveperson.net ]
C:\Documents and Settings\Family\Cookies\MPN1E2GC.txt [ /accounts.google.com ]
C:\Documents and Settings\Family\Cookies\7H3NLP0J.txt [ /media6degrees.com ]
C:\Documents and Settings\Family\Cookies\HY66MCYE.txt [ /liveperson.net ]
C:\Documents and Settings\Family\Cookies\E104AEF9.txt [ /in.getclicky.com ]
C:\Documents and Settings\Family\Cookies\B3KWKGFQ.txt [ /invitemedia.com ]
C:\Documents and Settings\Family\Cookies\U8BB8RQ3.txt [ /search.thevault.nhsdiscounts.com ]
C:\Documents and Settings\Family\Cookies\RPIT6UNH.txt [ /adserver.adtechus.com ]
C:\Documents and Settings\Family\Cookies\051L5910.txt [ /collective-media.net ]
C:\Documents and Settings\Family\Cookies\AHM281SY.txt [ /ad.yieldmanager.com ]
C:\Documents and Settings\Family\Cookies\P0FJX240.txt [ /paypal.112.2o7.net ]
C:\Documents and Settings\Family\Cookies\BH17WBS5.txt [ /nhsdiscounts.com ]
C:\Documents and Settings\Family\Cookies\BB8TV88M.txt [ /www.thevault.nhsdiscounts.com ]
C:\DOCUMENTS AND SETTINGS\FAMILY\Cookies\family@google[10].txt [ Cookie:family@google.com/accounts/ ]
content.yieldmanager.edgesuite.net [ C:\DOCUMENTS AND SETTINGS\TEMP\APPLICATION DATA\MACROMEDIA\FLASH PLAYER\#SHAREDOBJECTS\GVP00001 ]

===============================

MBAM

MBAM

Malwarebytes Anti-Malware 1.61.0.1400
www.malwarebytes.org

Database version: v2012.05.24.05

Windows XP Service Pack 3 x86 NTFS
Internet Explorer 8.0.6001.18702
Family :: WATKINS [administrator]

24/05/2012 22:59:08
mbam-log-2012-05-24 (22-59-08).txt

Scan type: Quick scan
Scan options enabled: Memory | Startup | Registry | File System | Heuristics/Extra | Heuristics/Shuriken | PUP | PUM
Scan options disabled: P2P
Objects scanned: 240018
Time elapsed: 8 minute(s), 41 second(s)

Memory Processes Detected: 0
(No malicious items detected)

Memory Modules Detected: 0
(No malicious items detected)

Registry Keys Detected: 0
(No malicious items detected)

Registry Values Detected: 0
(No malicious items detected)

Registry Data Items Detected: 0
(No malicious items detected)

Folders Detected: 0
(No malicious items detected)

Files Detected: 0
(No malicious items detected)

(end)

==============

GMER

I had some problems running GMER. Strike that - it seemdto run OK but then the computer hung and crashedwith blue screen, with the following info;

Tech Info:

***STOP: 0x0000008E (0xc0000005, 0xBF0329BD, 0xF75B6364, 0x00000000)

***ati2dvag.dll

Address BF0329BD base at BF012000, datastamp 44874076

=========================

Hoping you can clarify and advise.

Thanks
Josh

#4 TheShooter93

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Posted 26 May 2012 - 10:43 AM

That STOP code is usually associated with faulty RAM.

Unless it comes up again, we will proceed with dealing with the slowness issue.

The malware scans didn't pick up anything too serious, so I'll take you through some other steps.

------------------------------------------------------------

Click Start.

In the search bar, type MSCONFIG and hit Enter. Click the "Startup" tab.

Write down only the names in the "Startup Item" column that have a checkmark next to them.

If the "Startup Item" column isn't wide enough to see the entire name of any of them, widen the column.

Submit those names here in a vertical list.

Make sure to spell them EXACTLY as you see them there.

------------------------------------------------------------

Click Start - Run, then type in

%temp%

and then click OK.

Click Start - Run, then type in

c:\windows\temp

and then click OK.

Once those 2 temp folders appear and you can view their contents, select and delete EVERYTHING that's inside them.

If a few files resist being deleted, that's normal behavior. Leave them alone and delete EVERYTHING else.

If a massive number of files are being deleted, the computer may appear to "hang". Be patient and wait for the deletion process to finish.

After it's done, restart the computer.

------------------------------------------------------------

Download and run Crucial's System Scanner.

Since you can not attach files in this part of BC, you will either need to take a screenshot and post it to a website like Photobucket then include a link, or type all relevant information in your next post.

I'm looking for:
  • The type of RAM installed.
  • How much RAM is installed.
  • Total amount of RAM slots.
  • Number of RAM slots occupied.

CCNA R&SCCNA Security | Network+  |  B.S. - Information Technology | Security Engineer

If I am helping you and have not replied within 48 hours, please send me a private message.


#5 jpwessex

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Posted 05 June 2012 - 05:17 AM

Hi Shooter.

Here's the list from Startup;

ehtray
stsystra
CTSysVol
APSDaemon
avp
qttask
realsched
iTunesHelper
ctfmon
GoogleToolbarNotifier
ASCTray
SUPERAntiSpyware

========================

I removed a lot of stuff from the two temp folders as instructed.

=============

Had some problems scanning the ram. Dowloaded the fileto desktop and tried to run. A momentary flash of the MS-DOS window occurred and then the below text opened up in a notepad file, called 'sysprofile.htm'

<html><head>
<!-- saved from url=(0014)about:internet -->
<script language='JavaScript'><!--
function postForm(){
frmMain.action= 'http://www.crucial.com/systemscanner/results.aspx';
frmMain.submit();}
function timedRefresh(timeoutPeriod) {
setTimeout("location.reload(true);",timeoutPeriod);
}
--></script></head>
<body onload='javascipt:timedRefresh(3000);'>
<form id='frmMain' name='frmMain' action='' method='POST'>
<div align='center'><img src='http://images.crucial.com/images/scanner-loading.jpg' class='boxborder'></div>
<input type='hidden' name='ScanData' value=''><input type='hidden' name='ScanType' value='E'><input type='hidden' name='ScanStatus' value='E'>
<input type='hidden' name='appName' value='CrucialUKScan.exe'>
</form>
</body></html>


==============

In the meantime, the PC seems much more responsive to keyboard and mouse commands.

Should I attempt an alternative RAM scan?

Thanks again.

jpwessex

#6 TheShooter93

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Posted 05 June 2012 - 10:43 AM

Click Start.

In the search bar, type MSCONFIG and hit Enter. Click the "Startup" tab.

Remove checkmarks from the following entries:

ehtray
stsystra
CTSysVol
APSDaemon
qttask
realsched
iTunesHelper
ctfmon
GoogleToolbarNotifier
ASCTray
SUPERAntiSpyware

Click "OK."

Reboot the machine.

Once in Windows, you will receive a prompt alerting you of the changes we made.

Place a checkmark in the box and click "OK."

------------------------------------------------------------

You should also uninstall Kapersky using Revo Uninstaller.

Then download and install Microsoft Security Essentials.

------------------------------------------------------------

As for the Crucial Scan, it's really the best scan for this sort of thing.

Delete the icon from your Desktop and start over using the instructions I gave in post#4.

If it still doesn't work, follow the directions below.

------------------------------------------------------------

Download and install CPU-Z.

Click the Memory tab.

Take a screenshot of this window and attach it in your next post.

If you can't get the screenshot to work, typing all the information under the Memory tab will suffice.

CCNA R&SCCNA Security | Network+  |  B.S. - Information Technology | Security Engineer

If I am helping you and have not replied within 48 hours, please send me a private message.


#7 jpwessex

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Posted 05 June 2012 - 02:51 PM

Thanks Shooter.

OK. Unticked the startups and restarted. A pop up advised that systems config had changed and will pop up on each start. Can I tick the box to not show again? PC started up superfast. I'm not that certain what has been achieved by untickinmg that list. Can you explain a bit pls?

Installed MSE and ran a scan - all clear. :)

Tried the install and run of Crucials' scanner - still same thing happenedas earlier. So went ahead and ran CPUZ.

Here's the results.

General: Type: DDR2
Size: 1024 mbytes
Channels: Dual


DRAM Frequancy: 245.2MHz
FSB Dram: CPU/9
CAS Latency 4.0 clocks
RAS to CAS delay: 4 clocks
Ras precharge: 4 clocks
Cycle time: 12 clocks
Bank cycle time: 17 clocks
Command Rate: 1T

Away now for a few days. Will check back in soon.

JPWEssex

#8 TheShooter93

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Posted 05 June 2012 - 08:37 PM

OK. Unticked the startups and restarted. A pop up advised that systems config had changed and will pop up on each start. Can I tick the box to not show again? PC started up superfast. I'm not that certain what has been achieved by untickinmg that list. Can you explain a bit pls?

Yes, tick the box to not show that window again.

Unticking those items made it so those programs are not launched at startup.

Since those programs aren't launched at startup, those processes aren't continually being run in the background.

Therefore, you have a faster computer because you have more resources available to do work.

----------------------------------------------------

Download and install Speccy.

Click the "RAM" tab and tell me all the information. If you can get a screenshot of this window, that would be even better.

CPU-Z didn't tell me all the information I needed to know.

----------------------------------------------------

What make and model PC do you have?

CCNA R&SCCNA Security | Network+  |  B.S. - Information Technology | Security Engineer

If I am helping you and have not replied within 48 hours, please send me a private message.


#9 jpwessex

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Posted 12 June 2012 - 02:15 PM

Hello Shooter.

Thanks for the clarification on what we've done thus far. That all makes sense.

Have also run Speccy. Here's a link to the summary page. http://speccy.piriform.com/results/LURJIJsCQyK7TyDCDOdj2NW

The computer is a Dell Dimension C521.

Thanks again.

#10 TheShooter93

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Posted 13 June 2012 - 10:28 AM

Your Dell Dimension C521 currently has 1GB of RAM installed, and can hold up to 4GB.

Maxing out the RAM capacity would increase your computer's speed a noticeable amount.

Ordering 4 of these would max out your RAM capacity.

You don't have to max it out, but I suggest ordering at least two which would give you a total of 2.5GB of RAM.

CCNA R&SCCNA Security | Network+  |  B.S. - Information Technology | Security Engineer

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#11 jpwessex

jpwessex
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Posted 13 June 2012 - 11:01 AM

OK. Thanks Shooter.

So, if I order four modules, then I remove and dispose of the existing module? If I order just two, do I then leave the existing moudle in place or do I remove and dispose of the original?

Thanks for all the advice and patience with me on this.

JPW




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