Hi good folks! Here is the puzzle that has driven me insane for days now. My win xp pro sp1 couldn't load after i Upgraded my cpu from AMD Athlon 1800+ Palamino to AMD Athlon xp 2400+ Thoroughbred. I have tried to reinstall it but it just seems impossible. I wont take your time by describing my endless tries to reinstall the thing, what i am gonna do is that i am gonna leave you with this little description of my nightmare, it should talk for itself. Here it comes: I. Win xp pro fails to install with the new cpu. II. Win 2000 pro installs perfectly with the new cpu. III. When i install my old cpu (1800+) back on, win xp pro installs smoothly with no problems at all. (( Windows xp pro fails to format the drive when i try to install a fresh new one, and it fails copying files when i try to upgrade from the win 2000)). Now, can anyone in Guds name tell me what is going on? Anything.............. People please! Tanks!