I have the exact same problem on the p67 asus revolution motherboard. Only 2 days old. 2600k CPU. Waking up from sleep mode, all the fans turn on etc. but no picture and I hear 3 beeps from my speaker. Also, restarting will resume task usually too.
Using g.skill 2x4GB RAM specifially (supposedly) for the lga 1155. and sli gtx 460. vertex 2 ssd