Ok I disable LPC & EC support. I also forgot to tell you, when it goes black. USB keyboard and mouse becomes turn OFF. No power to it. Oh and this problem happen on both v3.58-913 and v3.59-920 beta
Windows 7 ULT (up to date)
Asus P7P55D-E Pro (newest bios.)
XFX HD5770 1GB (Cat...