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PC Problem


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6 replies to this topic

#1 zeelobe

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Posted 12 September 2009 - 04:02 AM

Hi all, I work in a company that uses 4 pc's in a network...and it uses a modem router for it's connection...by the way all of the PC's are running winxp sp2. Recently I have a problem with one of our computers, it can't access the internet. Normally when i start it up or reboot it I can access the internet for a brief moment then loses it's connection later on and the connection will never comeback though it says i'm connected...I'm not a computer savvvyyy guy but would love know how to repair this problem for a bit of knowledge.

Some of the fixes that i tried:
1. turned off the modem router and Pc for 5 mins. but still no connection.
2. Used the windows network repair still no connection.
3. Replaced the old internet cable with a new one, still no internet connection.
4. Tried flushing the DNS still no connection.
5. tried replacing ip address or obtain an automatic ip address but still it won't work.
6. reinstalled firefox and ie8 but still can't connect to the internet.

Recently I've removed a virus from its memory, can't remember its name, but I'm not quite sure if I've removed it all. And we also had a repair install of the system. I also did a full scan using malwarebytes and NOD32 which all came up with nothing.

Any idea on how to fix this?

thank you very much in advance and peace... :thumbsup:

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#2 garmanma

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Posted 12 September 2009 - 01:43 PM

Let's try this


ATF
Please download ATF Cleaner by Atribune & save it to your desktop.
  • Double-click ATF-Cleaner.exe to run the program.
  • Under Main "Select Files to Delete" choose: Select All.
  • Click the Empty Selected button.
  • If you use Firefox browser click Firefox at the top and choose: Select All
  • Click the Empty Selected button.
    If you would like to keep your saved passwords, please click No at the prompt.
  • If you use Opera browser click Opera at the top and choose: Select All
  • Click the Empty Selected button.
    If you would like to keep your saved passwords, please click No at the prompt.
  • Click Exit on the Main menu to close the program.
Note: On Vista, "Windows Temp" is disabled. To empty "Windows Temp" ATF-Cleaner must be "Run as an Administrator".
---------------------------------

Then run Mbam:

The process of cleaning your computer may require you to temporarily disable some security programs. If you are using SpyBot Search and Destroy, please refer to Note 2 at the bottom of this page.

Please download Malwarebytes Anti-Malware and save it to your desktop.
alternate download link 1
alternate download link 2
  • Make sure you are connected to the Internet.
  • Double-click on mbam-setup.exe to install the application.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • When installation has finished, make sure you leave both of these checked:
    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
MBAM 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 to close that box and continue.
  • If you encounter any problems while downloading the updates, manually download them from here and just double-click on mbam-rules.exe to install.
On the Scanner tab:
  • Make sure the "Perform Quick Scan" option is selected.
  • Then click on the Scan button.
  • If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  • The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  • When the scan is 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 and continue with the removal process.
Back at the main Scanner screen:
  • Click on the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked, and 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 in MBAM.
  • Copy and paste the contents of that report in your next reply and exit MBAM.
Note:
-- If MBAM encounters a file that is difficult to remove, you may be asked to reboot your computer so it can proceed with the disinfection process. Regardless if prompted to restart the computer or not, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.

Note 2:
-- MBAM may make changes to your registry as part of its disinfection routine. If you're using other security programs that detect registry changes (like Spybot's Teatimer), they may interfere with the fix or alert you after scanning with MBAM. Please disable such programs until disinfection is complete or permit them to allow the changes. To disable these programs, please view this topic: How To Temporarily Disable Your Anti-virus, Firewall And Anti-malware Programs
---------------------------
Be sure to re-enable your AV and malware scan tools if they were disabled
--------------------------------------

Finally run Dr Web cureit

Please download Dr.Web CureIt, the free version & save it to your desktop. DO NOT perform a scan yet.

Reboot your computer in "Safe Mode" using the F8 method. To do this, restart your computer and after hearing your computer beep once during startup (but before the Windows icon appears) press the F8 key repeatedly. A menu will appear with several options. Use the arrow keys to navigate and select the option to run Windows in "Safe Mode".

Scan with Dr.Web CureIt as follows:
  • Double-click on launch.exe to open the program and click Start. (There is no need to update if you just downloaded the most current version
  • Read the Virus check by DrWeb scanner prompt and click Ok where asked to Start scan now? Allow the setup.exe to load if asked by any of your security programs.
  • The Express scan will automatically begin.
    (This is a short scan of files currently running in memory, boot sectors, and targeted folders).
  • If prompted to dowload the Full version Free Trial, ignore and click the X to close the window.
  • If an infected object is found, you will be prompted to move anything that cannot be cured. Click Yes to All.
  • When complete, click Select All, then choose Cure > Move incurable.
    (This will move any detected files to the C:\Documents and Settings\userprofile\DoctorWeb\Quarantine folder if they can't be cured)
  • Now put a check next to Complete scan to scan all local disks and removable media.
  • In the top menu, click Settings > Change settings, and UNcheck "Heuristic analysis" under the "Scanning" tab, then click Ok.
  • Back at the main window, click the green arrow "Start Scanning" button on the right under the Dr.Web logo.
  • When the scan is complete, a message will be displayed at the bottom indicating if any viruses were found.
  • Click "Yes to all" if asked to cure or move the file(s) and select "Move incurable".
  • In the top menu, click file and choose save report list.
  • Save the DrWeb.csv report to your desktop.
  • Exit Dr.Web Cureit when done.
  • Important! Reboot your computer because it could be possible that files in use will be moved/deleted during reboot.
  • After reboot, post the contents of the log from Dr.Web in your next reply. (You can use Notepad to open the DrWeb.cvs report)

Mark
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why won't my laptop work?

Having grandkids is God's way of giving you a 2nd chance because you were too busy working your butt off the 1st time around
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#3 rumburak

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Posted 12 September 2009 - 02:35 PM

You might be interested in checking the post i created, where i have a similar problem. Check first that you are blocked only from browsing the internet (port 80) but able to use other protocols (such as ssh, telnet, skype). In that case read http://www.bleepingcomputer.com/forums/t/257135/cant-browse-but-the-internet-is-working/, i solved my problem by removing some zone alarm files installed by the cisco vpn client.

Rumburak

#4 zeelobe

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Posted 13 September 2009 - 08:34 PM

Thank you for your reply,

@ garmanma, I followed all instructions but still couldn't connect to the internet.

This is my Malwarebytes log:

Malwarebytes' Anti-Malware 1.41
Database version: 2788
Windows 5.1.2600 Service Pack 2

9/13/2009 4:10:41 PM
mbam-log-2009-09-13 (16-10-41).txt

Scan type: Quick Scan
Objects scanned: 94975
Time elapsed: 3 minute(s), 8 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)

As for my doctorweb cureit log, after scanning save report list is un-click-able hence i couldn't save a log of the scan. But the scan came up with nothing.

The virus that I've removed before was at the N4 shell.fne something, not quite sure if this is right. NOD32 kept on saying that a virus has been detected in the memory but can't remove it after reboot. Also we had a router installed on one of the computers for internet access of visitors. But i had to remove it because it "killed" the connection of the computer (not the one i'm repairing now). It was a linksys wireless g router. Thank you...

@rumburak
can't find vsdatant...Thanks

#5 garmanma

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Posted 14 September 2009 - 03:43 PM

Try SmitfraudX

http://www.bleepingcomputer.com/virus-remo...se-smitfraudfix

might have to run twice
Mark
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why won't my laptop work?

Having grandkids is God's way of giving you a 2nd chance because you were too busy working your butt off the 1st time around
Do not send me PMs with problems that should be posted in the forums. Keep it in the forums, so everyone benefits
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#6 zeelobe

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Posted 15 September 2009 - 09:43 PM

hi garmanma, tried your suggestion smitfraud but after cleaning still have no access to the internet...might be a hardware damage for my internet? is there a possbility?

thanks

#7 garmanma

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Posted 16 September 2009 - 03:39 PM

I would suggest that you post in our Networking forum, where you can get the proper assistance
http://www.bleepingcomputer.com/forums/f/21/networking/
Mark
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why won't my laptop work?

Having grandkids is God's way of giving you a 2nd chance because you were too busy working your butt off the 1st time around
Do not send me PMs with problems that should be posted in the forums. Keep it in the forums, so everyone benefits
Become a BleepingComputer fan: Facebook and Twitter




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