I just had the dreaded "my motherboard won't power on" symptom on my ASRock Z97 Extreme4 motherboard. I want to replace the cmos battery on the board but I don't know what model type to get. Does anyone here know what type of battery it is? The board is working now but there is a huge reddit thread devoted to this board and this problem. I don't want to RMA it yet. I'll replace the cmos and see if that was the issue. Thanks.