Hi Guys, I have recently started experiencing very unique problem. After using computer for few hours suddenly the Monitor goes off, while system stays ON, then I check my Motherboard Asus LED code it shows "AO" which it normally shows when all is OK. So I restart my PC and then the Monitor starts after system reboots. I really don't know what is the problem here? System Name:To be ALL IN ONE MACHINE. but not yet Processor:i7 3770k Motherboard:Asus P8Z&&-V Deluxe Cooling:Thermalright Silver Arrow Memory:Gskill Ripjaws 1600Mhz 8GB *4 = 32GB Hard Disk(s):Samsung pro 840 256GB, Segate 3TB and 1TB Optical Drive:Transcend portable LCD/CRT Model:LG 23" Full HD LED Case:Antec LanBoy Air Power Supply:Cooler Master M2 Silent Pro 850 Watts Software:Windows 7 ulimate 64bit I am also using APC Back-UPS Pro 1500. so there is no chance of Power fluctuation. Please advise.