Windows 64-bits , Worm Virus, Boot Scan,

Hi!!!..I read that Avast doesn’t support the Boot Scan in a WXP 64 bit… but if I have a virus and my computer is very slow…how can I do manually(something to write down or I don’t know)…The problem that I get Its “reboot cant be done for some privileges or something like that” or I need to find another antivirus that supports these because my computer its very slow and the virus are in the operating memory … ???
I have the viruses in the chest but my machine is still slow…
The viruses are VBW-Malware-GEN, Win32:VB-EA[trj]…and my system files infected kernel32 and wsock32…so what can I do…I in the middle of a render work…please help :-\

Hey try to run Avast and use avast to scan your whole computer. After scanned and if there is a virus than delete it from your computer or is better to delete the virus from the chest or try this and this I learn from Tech

And this make my laptop running faster and better than last time