Out of no wheres my computer is constantly crashing for who knows what reason. Tho it's not crashing on my Mac Safe Mode side... Did I just pick up a rare Mac Virus?

I'm running Avast Free edition on Safemode in Mac side will that catch the nasty virus if its the virus causing instant crashes on Mac side?


Edit: Weird, while in Safe Mode on my Mac side I ran Avast Free Mac edition and it found a virus but it wasn't a Mac virus it was a Windows virus. Anyways, as of right now my Mac 10.7.3 non-safe mode side is working. This is very weird... Can some Windows viruses affect Macs or was it just coincidence?

Edit: Forgot to mention I did go back to an old 32 bit Flash which could have solved my issues. Maybe latest version of Flash was causing issues? Who knows...

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OS: Hackintosh Lion 10.7.3 and Windows 7
CPU: Amd Phenom II x4 965 3.4ghz
Ram: 4 gigs of ddr3 ram
Graphics Card: Nvidia GigaByte GTX 570
Motherboard: Asus M4A79XTD EVO