Hi everyone. After a format and reinstallation I made of win xp my system won't boot. POST process is successful but when windows logo apears on the black font it just hangs there. Tried to boot from CD but but it won't unless reinstalling windows. So every time I turn on the PC I need to repair/reinstall windows for the system to run. On the first restart after the repair/reinstalllation of windows the system starts properly but the next time I turn it on it doesn't. Is this a bios problem? i tried all combinations and the default one.