Robinwood

Ok, thanks for your input. 1. I cleared the BIOS so should be as default as possible. Even did the old school remove battery trick. 2. yeah, thinking that too 3. might be that some IO chip is unresponsive. The A2 means IDE initializing, not sure if even that is relevant.

specs: - i5 6600k with arctic freezer 7 - asus ROG maximus viii ranger - Corsair DDR4 Vengeance LPX 2x8GB 3200 - cooler master mwe 550 gold - palit gtx 970 4Gb with zalman vf1000 Hi, I've bought this second hand board. Put everything together. Overclocked to 4.8 with 1.415vcore. Got it stable and played a few games for about an hour. Temps were good, not more than 85 celcius. I turned the system off and let it sit for a few hours. Tried to turn it back on and now it just hangs in post. with q-code 99 or q-code A2. I reseated my gpu, Removed my gpu and tried to boot on the integrated graphics. Tested both ram sticks Reseated all cables, and mobo connections. Tried different 1200watt psu Reseated CPU, other cooling paste. Tried booting outside of my case, on both integrated and external gpu, with each ram sticks seperatly And obviously cleared my CMOS multiple times. Im still stuck on the Q-code 99 (or A2 sometimes ) with signal to monitor. Any more ideas ?