Below are my specs, I put this together myself in December from recommended kit from FRYS and it has been working great until 2 weeks ago. The BOOT_DEVICE_LED was coming up but after ~15 seconds Windows 8 would start up and everything worked fine. Then one day got past the BIOS and hung at the Windows 8 load screen then monitor would shut off, computer was running but nothing happened. A few days after the computer would hang on BIOS screen, keyboard unresponsive. Spoke with Asus they said to return to Fry's. Exchange for a new one no questions asked so rebuilt a week ago, worked great then yesterday the same thing happened where screen stuck on the BIOS but then flashed to black screen indicating 2 recognized SATA ports - the Western Digital HD and the BluRay drive, Red LED and unresponsive keyboard then back to BIOS where it hangs. Switched out RAM with another computer, tried only 1 stick but it still didnt work. Unplugged all components and drives except for CPU, RAM, and power supply and still BOOT_DEVICE_LED is coming up. I dont think its the motherboard or the RAM and I dont know why the CPU would be failing if it works for such long spans, any ideas?
Motherboard: P8Z77-V Pro/Thunderbolt
CPU: Intel i7 3770k - 3.5 GHz 8MB L3 Cache
Memory: 2 x Patriot Viper- 8gb 1600 Dual (2 x 4GB)
SSD: Monster Digital - 120 GB (This is the primary drive that boots the OS)
HDD: WD Green 3TB (Secondary Drive with all non-OS Data)
GPU: Onboard (None)
DVD: LG 10x BluRay
Power Supply: Raidmax 1000w Gold
Motherboard: P8Z77-V Pro/Thunderbolt
CPU: Intel i7 3770k - 3.5 GHz 8MB L3 Cache
Memory: 2 x Patriot Viper- 8gb 1600 Dual (2 x 4GB)
SSD: Monster Digital - 120 GB (This is the primary drive that boots the OS)
HDD: WD Green 3TB (Secondary Drive with all non-OS Data)
GPU: Onboard (None)
DVD: LG 10x BluRay
Power Supply: Raidmax 1000w Gold