Boot issues. Without 'noapic' no boot

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http://forums.fedoraforum.org – Pals.... A thing that's annoying me is that I must use noapic or nolapic (I'm using both) to run fedora. I participate at folding at home. Boot the system, wait a little after login screen, starts folding, system halts. If monitor is off, no more it's get on, and keyboard and mouse do nothing now I'm trying with "clocksource=hpet". Until this moments, no halt... It has 8 minutes even without folding, it works about two hours and halts again Memory fully tested. No hardware problems. temperature ok. And if I compile a kernel, worst..... don't past from "loadi (HowTos)