Hello.
You have the W32.Opaserv.K.Worm virus.
Does the message you see when you boot say the following:
NOTICE:
Illegal Microsoft Windows license detected!
You are in violation of the Digital Millennium Copyright Act!
Your unauthorizedlicense has been revoked.
For more information, please call us at:
1-888-NOPIRACY
If you are outside the USA, please look up the correct contact information
on our website, at:
www.bsa.org
Business Software Alliance
Promoting a safe& legal online world.
This virus "It overwrites the boot section of the hard drive, deletes the CMOS, and destroys all the data on the hard drive."
Sorry for the bad news.
Here is the Symantec write-up on this virus:
http://www.sarc.com/avcenter/venc/data/w32.opaserv.k.worm.html
(please remove any spaces)