Remove your system from the case and place it on the box your motherboard came in as a temp work bench.
Remove all the components from your system, including the CPU and the motherboard battery.
All you have on the box is a naked (and rather forlorn looking) motherboard - no PSU connectors nothing connected.
Press power for a few seconds to remove any residual charge from the capacitors and then a slow three count of the Clear CMOS button. Use your manual to find out where it is if you are not 100% sure. Had a mate who swore blind his CMOS clear button was not working and called me all sorts of rude names. Brought his board over to my house and I pressed the button and cleared his CMOS. WTF he says? How did you do that, it turns out he was using the ROG connect button all the time incorrectly, I will not be needing to buy and beer for Christmas I might add, he was very apologetic.
Leave for a couple of hours and then after visually inspecting the CPU socket area, take a couple of very high res photo's while you are at it - fit the CPU again. Use only one stick of memory in the slot furtherest away from the CPU (either side) and no HDD.
Boot to BIOS.
Manually set your ram up.
If that fails change the BIOS to your B bios and start again.
To help us help you - please provide as much information about your system and the problem as possible.