I have a Avermedia DVB-T Digital TV Card, which worked fine on my previous motherboard, but has some kind of Issue with NForce motherboard chipsets. As suggested by someone else on another forum, I have disabled APIC in the BIOS, and this seems to have solved my TV Card issue (random signal breakup, even with strong signal). I have tested this with another clean installed Windows on another hard drive, but my problem now is that my main hard drive does not but up if APIC is turned off, would repairing Windows fix this? or is a complete reinstall needed? Also, what exactly is APIC? Is it something to do with expanded IRQs?