completely frozen computer. backdoor trojans are to blame. help. need unfreezing

my PC logs on but after its done its startup from logging on, it freezes. Before it froze, some virus checkers found some viruses but couldnt deleate them. it completely froze up when I downloaded Avest virus scanner and it deleted some viruses that it said it found. I think theres a virus in my processes. im not sure how to copy and paste the processes to show you. im using another computer at the moment if anyone is wondering. has anyone got any help.

 

where should i move this forum to

 

thanks for moving it. now can someone help me with my problem.

 

i have. it did a full system scan and found quite a few viruses. it deleted some but couldnt delete:

c:\WINDOWS\installer\59f8fb.msi\data1.cab
and
c:\WINDOWS\system32:svchost

the svchost one came up in processes alot and i tried deleting them all but after terminating quite a few, an unclosable window came up with a timer to shut down in 50 seconds.

 

how do mate. i would go to http://www.freewarefiles.com/ and goto security- anti virus.. i think on page 7 you will see small norton tools. they are only 400kb each and a doddle to install. they are quite quick but i can assure you they work..

 

ohh once they have finished you will have to update your system. the windows installer will be missing plus a few others. once you have updated do a selective, deep scan of system 32, just to make sure.. good luck.