Well of late my PC has been constanly freezing. Now i am not sure if you are familiar but if u listen closely ( very ) you can hear a faint chk noise evrytime your PC restart normally . Well everytime before freezing i got that noise. I feared a read/write errr and scanned my pc using HDtune (http://hdtune.com) and also performed scan disk. I didnt get any error so i have ruled out Hard Disk problem . After a little more experimenting i realized that i get this erro everytime a pirtivular scratched CD is there in my CDROM . Now i removed the CD and booted and i dont see it freezing ( else i wont be typing this ) . So i now think my CDROM is at fault .. ( I have been suspecting the darn thing for a while now ! ) So help me out because i sometimes fear a prob with the mobo .. which could spell my death ( eek !) ..