After fixing one problem with my computer yesterday, a new one came up. It powers on but there's no post, no video and the lights on my usb keyboard and mouse don't come on. Everything was working before my new heatsink came in the mail and I put it in. I've tried reseating everything, clearing the cmos overnight while I slept, using only the stock fan with my processor, one stick of ram and gpu. Anyone have any idea what the problem could be?
My specs are i7 2600k, 560ti, 8gb ram, asus p8p67 deluxe, 750 watt psu and 4 hdds.