I need to get rid of this virus...?

Windows keep telling me I have a virus, that makes my PC vulnerable for hacker attack and breakdowns. I have an anti-virus and an adware-remover, but none of them found anything. So do you know a POWERFUL virus and spyware remover (In the same time), for FREE?

I need to get rid of this virus...?bmw

First of all this is NOT most likely a windows error it could really be a virus or spyware program trying to trick you into installing more of its software and just make more damage. Now a days many viruses and spyware will try to look like a system error or a windows error if you have a virus/spyware that already does this it may already messed with your windows registry or the WINDOWS folder in your hard disk (it would be C:\WINODWS) Since it already may have done this much damage you may want to consider to reformat the hard drisk or reinstall the OS using your system restore CD. Make sure you have protection i have links for some.

If it hasn't done this yet it will soon,and if you let it do more damage you may not even be able to start your computer. a virus on a computer works just like a virus in a human. It will reproduce itself and try to cause more damage.

I need to get rid of this virus...?free adware remover

If you go to download.com try downloading some of the free ones or download limewire and download a REALLY good one.
Try spyware doctor 0r spybot search %26 destroy.You can download them from Download.com for free.
go here and download windows defender.http://www.microsoft.com/athome/security...
get this for virus remover: http://www.grisoft.cz/softw/70/filedir/u...