my computer freezes up during start-up. to solve the problem, i reformatted my pc, but it still freezes. i removed the dedicated VGA to see if it's the one causing the problem, but to no avail. PC still freezes and sometimes, when it loads, it freezes and screen turns green,black, and sometimes blue. IS this a hardware problem? how can i fix this? MOBO:ASUS M4A78LT-M LE RAM: 2GB HDD: 300Gb Processor: Athlon phenom II 965 OS : winxp pro actions taken but didn't solve the problem: 1. installed and run CCcleaner and Registry Easy 2. removed dedicated VGA (geforce 9500) 3. reinstalled OS 4. updated graphics drivers. can anyone help??