i just switched my case. to a 330r. now i cant boot the computer. i tried 2 different cards. and its always the same thing 1 long 2 short beeps. like 3 weeks ago i had the same problem. i couldnt boot for a few days trying everything. then all of the sudden i put my gpu into the slot and it booted. dont know what changed.. the time that it worked i kinda nudged the pcie express slot a bit.just kinda pushing on it.. then put the gpu in and it worked.. dont get it ?