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Laptop extremely slow. SVChost problem?

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#1 bdpoop


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Posted 04 April 2015 - 02:59 AM

I am trying to solve a problem on my neighbours laptop while she is away on holiday.  Its a Sony Vaio i3 with 3GB Ram, Win 7 pro, probably about 4 years old.


It is so slow I just cannot do anything on it.  I ran a Avast Rescue USB through it yesterday which took several hours and found 1 rootkit virus which it removed.  no difference.  I have tried running Malwarebytes but its just taking way to long.


It is running Norton Internet Security which complained the SVCHOSTS was hogging memory.   When I eventually got into Task manager and Resource manager I could see SVCHOSTS.exe (netsvcs) was indeed taking  lot of RAM.  The CPU Usage would be nothing but memory usage quite high.  On occasion the CPU usage would fly up to 95% and drop down again.  The Fan seems to be on a lot which I have noticed is an issue with a lot of Sony Vaio laptops.


I really do not know how she has been using this for work as its just unusable.  I am watching it reboot now and so far its taken 10 mintutes and nothing.  I tried removing all the programs out of the start up in MSCONFIG and its just the same.


Is it worth trying to see what it is or is it time for a Factory reset?


EDIT: It seems fine and fast enough in Safe Mode



Edited by hamluis, 04 April 2015 - 04:55 AM.
Moved from Win 7 to Am I Infected - Hamluis.

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#2 bdpoop

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Posted 04 April 2015 - 04:44 AM



I think it might be Norton or a program called Mozypro backup.  I disconnected the wifi first then disabled both Norton and Mozypro and the SVCHOST.exe (netsvcs) has dropped down to next to nothing.  SVHOST.EXE (Localsystemnetworkrestricted) has appeared but I am guessing this is something to do with disabling the wifi connection.


I renabled the Mozypro backup which is a genuine application and in use and no change so I wonder if its norton which is still disabled. 


This has finally enabled me to do a Malwarebytes scan which has just finished and found 1814 bits of Malware as well.


Could be a combination of Norton and Malware?

#3 buddy215


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Posted 04 April 2015 - 06:32 AM

Run some scans for adware and malware. Finding a rootkit as Avast did doesn't bode well. Leave Norton disabled for now.


Use CCleaner to remove Temporary files, program caches, cookies, logs, etc. Use the Default settings. No need to use the

Registry Cleaning Tool...risky. Pay close attention while installing and UNcheck offers of toolbars....especially Google.

After install, open CCleaner and run by clicking on the Run Cleaner button in the bottom right corner.

CCleaner - PC Optimization and Cleaning - Free Download


Download AdwCleaner by Xplode onto your desktop.

  • Close all open programs and internet browsers.
  • Double click on adwcleaner.exe to run the tool.
  • Click on Scan button.
  • When the scan has finished click on Clean button.
  • Your computer will be rebooted automatically. A text file will open after the restart.
  • Please post the contents of that logfile with your next reply.
  • You can find the logfile at C:\AdwCleaner[S1].txt as well.


  • download Junkware Removal Tool to your desktop.
  • Shut down your protection software now to avoid potential conflicts.
  • Run the tool by double-clicking it. If you are using Windows Vista, 7, or 8; instead of double-clicking, right-mouse click JRT.exe and select "Run as Administrator".
  • The tool will open and start scanning your system.
  • Please be patient as this can take a while to complete depending on your system's specifications.
  • On completion, a log (JRT.txt) is saved to your desktop and will automatically open.
  • Post the contents of JRT.txt into your next message
  • Hold down Control and click on this link to open ESET OnlineScan in a new window.
  • Click the esetonlinebtn.png button.
  • For alternate browsers only: (Microsoft Internet Explorer users can skip these steps)
  • Click on esetsmartinstaller_enu.exe to download the ESET Smart Installer. Save it to your desktop.
  • Double click on the esetsmartinstaller_enu.png icon on your desktop.
  • Check "YES, I accept the Terms of Use."
  • Click the Start button.
  • Accept any security warnings from your browser.
  • Under scan settings, check "Scan Archives" and "Remove found threats"
  • ESET will then download updates for itself, install itself, and begin scanning your computer. Please be patient as this can take some time.
  • When the scan completes, click List Threats
  • Click Export, and save the file to your desktop using a unique name, such as ESETScan. Include the contents of this report in your next reply.
  • Click the Back button.
  • Click the Finish button.
  • NOTE:Sometimes if ESET finds no infections it will not create a log.

Download TDSSKiller and save it to your desktop.

  • Extract (unzip) its contents to your desktop.
  • Open the TDSSKiller folder and doubleclick on TDSSKiller.exe to run the application, then on Start Scan.
  • If an infected file is detected, the default action will be Cure, click on Continue.
  • If a suspicious file is detected, the default action will be Skip, click on Continue.
  • It may ask you to reboot the computer to complete the process. Click on Reboot Now.
  • If no reboot is require, click on Report. A log file should appear. Please copy and paste the contents of that file here.
  • If a reboot is required, the report can also be found in your root directory (usually C:\ folder) in the form of TDSSKiller_xxxx_log.txt. Please copy and paste the contents of that file here.

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#4 bdpoop

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Posted 04 April 2015 - 12:05 PM



Thats a lot of stuff to download.  I was hunting around earlier on the internet and on some of the tech forums they were saying these cleaners could do more damage than good.



The only one I trust is Malwarebytes.   Since Malwarebytes removed all the PUP's (Which is what they were) and I disabled and then re-enabled Norton it seems to have calmed down.  I have not had time to try it extensively yet but instead of the SVCHOSTS file taking up 1.2GB of Ram one was down to 40mb and one 200MB.  Total Ram used was showing 1.4GB instead of 2.4 or there abouts.


The Avast Boot USB stick said it had deleted the Rootkit virus so I am wondering if I have solved the problem.


Probably not totally as its still slow but much better than it was but that could just be the age of the PC and all the programs that are running on it. 


Thanks for you advice but I will run it  bit more first before I start downloading more stuff.  I may be trying to fix a problem that is no longer there.

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