P9X79 Boots then Won't Boot

Trask740

Honorable
Mar 3, 2013
5
0
10,510
New build:

Asus P9X79 MB
Intel I7 3820 CPU @ 3.6Ghz
EVGA GTX660 2Gb Video
Mushkin Blackline 32 Gb (4 x 8Gb) PC3 14900 Memory
Samsung SSD 840 128Gb HD
930W PS

crammed into a mid-tower case.

After assembly about 2 weeks ago system booted about 25-30 times fine. I installed Windows 8 and some programs no problem. Yesterday, the final 2 or so boots it would hesitate a little before starting. Now it will not start at all. The MB LED lights as well as the optical mouse but no start. I figured it was some sort of a grounding problem so today I moved everything over to a full tower case with more room. I used insulating donuts on the standoffs. However, no difference, still no boot. Any advice or guidance appreciated. Thanks in advance.