Sorry...went to movie & diner. Use (1) stick in DIMM_A2, second DIMM slot from the CPU. Next, Clear CMOS, Jumper method, see page 2-21 figure 2.2.7 Jumper.
CPU | - | Stick | - | - |
If that doesn't work try the other stick, and if that fails then it's probably not your RAM.
If your using a non-OEM CPU fan and the Mounting is not insulated you can be causing a small short circuit. Before pulling anything, try the MemOK button, see page 2-16 figure 2.2.5 for use.
Next, just to rule-out some oddball short: unscrew all of the MOBO and PCIe screws, pull the MOBO away from anything conductive and dangle supported on a towel. Try again.
Correct, if you cannot get in to the BIOS then you're stuck.