Could not remove viruses

try scanning that system with this live cd:
Kaspersky live cd http://devbuilds.kaspersky-labs.com/devbuilds/RescueDisk/

--It is in iso/image format so you will have to burn it to a cd.
--Once the cd is created, boot the infected machine to that cd and scan your system
NB-Update the virus database in live cd before scanning.



Also, do you have your installation media?
If so you may have to do a repair installation afterwards, depending on what infected files Kaspersky live cd removes->ie.If system files are infected and removed,
the operating system will not start, thus resulting in a repair installation

The LiveCD's are good, but another way that I usually end up cleaning viruses is taking the hard drive, connecting it to a host computer, and then run an updated antivirus program and malware program (I use AVG and Malwarebyes anti-malware).  the majority of the time, this cleans the drive enough for it to boot properly and download / install the programs locally to the computer to finish the cleanup.  

While your pc is still able to boot normally try removing the infection while windows is active so the risk of pc being unbootable is not high.

Rename the scanners e.g. Combofix in the flash drive before inserting it into the infected pc.

Or try these also:
1.  Download MalwareBytes:
http://download.cnet.com/Malwarebytes-Anti-Malware/3000-8022_4-10804572.html?part=dl-10804572&subj=dl&tag=button

NOTE: Save the installer file and rename it to installer.com then run the file.
Once MBAM is installed, you then locate and rename mbam.exe to mbam.com

Click on the renamed file to run it and then perform a quickscan.
Allow it to delete what it finds and then allow the computer to reboot.



2. OR, download ComboFix by sUBs:
http://download.bleepingcomputer.com/sUBs/ComboFix.exe

NOTE: You need to rename Combofix to CF.bat prior to saving the file or before plugging the USB in.
Make sure the 'Save as Type:' is "All Files"

Now STOP all your monitoring programs (Antivirus/Antispyware, Guards and Shields) as they could easily interfere with ComboFix.
Double click combofix & follow the prompts.
When finished, it will produce a log. Please save that log.

Note:
Do not mouse-click combofix's window while it is running. That may cause it to stall.

CF disconnects your machine from the internet. The connection is automatically restored before CF completes its run. If CF runs into difficulty and terminates prematurely, the connection can be manually restored by restarting your machine.


If needed, here's the Combofix tutorial which includes the installation of the Recovery Console:
http://www.bleepingcomputer.com/combofix/how-to-use-combofix  




3.  If the tools still won't run, try win32diag.exe and show us the resulting log.
Please download this tool and run it.
http://ad13.geekstogo.com/Win32kDiag.exe

Double-click on Win32Diag.exe to run it. If you are using Windows Vista, please right-click and select Run As Administrator
A black command prompt window shall appear.
It will now begin to scan. This may take a while, please be paitent until the scan is complete.
Once it's done, in the black screen it will say "Finished! Press any key to exit....
A log file called Win32KDiag.txt will be created on your desktop.
Please copy and paste the contents of that log file here in your next reply please.


If the above 3 won't work, we can try OTL.