removal of virus from windows Vista

[devbravo]

Does anyone know of a utility that can
1) Boot DOS from a CD
2) Access the registry and system files in order to analyze and remove viruses and spyware

I have a laptop which has a virus which prevents windows from even starting (not even safe mode)

[Crush]

Hello, and welcome to Computer Hope Forums!

I'm Crush but, you can call me Chris too and I will be helping you with your Malware issues

Please note the following information about the malware forum:

• Only members of the Malware Removal Specialist user group are allowed to give advice on removing malware from your computer. Do not follow the advice of anyone without that user title.
  
• From this point on, please do not make any more changes to your computer; such as install/uninstall programs, use special fix tools, delete files, edit the registry, etc. - unless advised by the staff I noted above.
  
• Please do not ask for help elsewhere (in this site or other sites). Doing so can result in system changes, which may not show up in the logs you post.
• If you have already asked for help somewhere, please post the link to the topic you were helped.
• We try our best to reply quickly, but for any reason we do not reply in two days, do this:

Reply to this topic with the word BUMP.

• Lastly, keep in mind that we are volunteers, so you do not have to pay for malware removal. Persist in this topic until its close, and your computer is declared clean.

Now that we have that out of the way:


    We are going to be using a Windows Recovery Environment to help disinfect the system so it may boot again.

    Download the OTLPE Standard REATOGO Windows Recovery Environment.

• Place a blank CD-R disc in to your CD burning drive.
• Download OTLPEStd.exe and double-click on it to burn to a CD using ISO Burner.
• Reboot your system using the boot CD you just created.

Note : If you do not know how to set your computer to boot from CD follow the steps here
   

• Your system should now display a REATOGO-X-PE desktop.
• Double-click on the OTLPE icon.
     
• When asked "Do you wish to load the remote registry", select Yes
     
• When asked "Do you wish to load remote user profile(s) for scanning", select Yes
     
• Ensure the box "Automatically Load All Remaining Users" is checked and press OK
     
• OTL should now start. Change the following settings
  • Change Drivers to Non-Microsoft
       
  • Press Run Scan to start the scan.
       
  • When finished, the file will be saved  in drive C:\_OTL\MovedFiles
       
  • Copy this file to your USB drive if you do not have internet connection on this system
  • Please post the contents of the OTL.txt file in your reply.