Hi my computer has a bad virus that i cant get rid of. ive tried a lot of programs but my computer is still the same.

Restart computer, Press F8 key many times at start up.
Choose Safe mode with networking. Log in to Administrator. You can also download in safe mode!
(almost never password protected) Create a NEW account as administrator. (example) BOB
restart the computer and then choose BOB to log in to. NOW try to run programs with the BOB log in - there are also FREE - Yes free! programs that can help clean your computer up. Here's the (LINK)
Ccleaner, Spybot, Spyware blaster, Ad-Aware..(Anti Virus) Avast BEST free Anti-Virus(1)

Hope this helps!
P.s (if this doesn't work) Try a Anti Virus cleaner boot disk.

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Ave you done a full virus scan with up-to-date anti-virus software?

If you don't have any anti-virus software and you use the Internet, you REALLY need to get some! My preferred anti-virus package is Norton Anti-Virus but, if you want a free copy in a hurry, download AVG Anti-Virus from www.grisoft.com - that's also excellent