Have you tried a CMOS reset.
Remove Power from PC
Unplug CMOS(watch) Battery
locate the CMOS pins on the motherboard.
The are the bottom left, CLR_CMOS in the picture of your board
Now using something small and metal, SHORT THESE 2 PINS WHILE DEPRESSING THE CASE POWER FOR 15 SECONDS.
Make sure you are shorting them and depressing the power button for 15 seconds simultaneously.
This drains all the power, and reset the CMOS.
attempt a boot, let me know
Typically works for ram issues