Hi, i have a windows xp home edition pc but when i turn it on it says that my destop is not accessible and denied i still can go on the internet but i can't download it says that my C: is denied then a message came up saying that my registry is corrupt and it said i have to update my registry but when i click on the link to do that it won't let me it says my destop is denied.
P.S System may crash soon...
Can someone help please.... Thank You..

This sounds like some kind of spyware scam. A link to "update my registry" is very suspicious.
Try booting on Safe mode.
System Restore may help, and a Hijack this log file may be in order.

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