To remove all the spyrawe/virus without formatting the system, its only possible by running an antivirus software. But as you have mentioned its too crippled to run it, then there is only one way to do it. Run an avitvirus software in SAFE mode (i.e while booting your system press F8 key and then select Boot in Safe Mode). This is more effective way to run any antivirus software.Try with this, it might work. Its definately worth a shot.Personal experiance
--Maicon Thu Apr 11 15:17:24 2013

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