"Security Tool" trojan is infuriating me...

[Kabob]

My co-worker brought her daughter's laptop to work for me to fix (she does this often as her daughter goes who knows where and gets all kinds of junk on her computer). I fixed it two weeks ago and last week she brought it back to me again, this time with the Security Tool trojan.

Now, I thought it wouldn't be so bad, I'm using this guide for removing it (I'm not IT virus zapping expert, I feel no shame in using it!). I used rkill, updated Malwarebytes, etc. When running Malwarebytes though it'll get maybe 25-30 mins into the scan and the computer will shut down...it's happened more than once.

Any idea what is causing this and is there a way around it? I assume it's a trojan doing it but then again her daughter is VERY rough on her laptop (not sure why a 9 year old needs a laptop...she got it when she was 7!)...

Any ideas?

 

[MadScientist]

Are you running rkill and Malawarebytes Anti-malware in Safe Mode with networking?

If it stills shuts down during an MBA scan you may want to try the Avira Rescue Disk first, and then run rkill and MBA.
http://www.free-av.com/en/products/12/avira_antivir_rescue_system.html

 

[RebateMonger]

If it's got XP or Vista installed, consider re-formatting and re-installing the OS and desired programs and then installing Microsoft's free "Steady State":

http://www.microsoft.com/windows/products/winfamily/sharedaccess/default.mspx

 

[pcgeek11]

If it's got XP or Vista installed, consider re-formatting and re-installing the OS and desired programs and then installing Microsoft's free "Steady State":

http://www.microsoft.com/windows/products/winfamily/sharedaccess/default.mspx

+100

I have customers like this also. The troublesome ones = I don't put a lot of effort into recovery Format and reinstall. Oh you had stuff you wanted to save? Darn you should have told me. They never learn.