So ~1 week has passed after upgrading motherboard and RAM, everything's been going great, except for one issue. Every now and then (it has happened like ~2/3 times), the motherboard welcome screen image gets corrupted, resulting in the PC failing to boot.
Now, this never happened to me with my old motherboard/RAM combo (ASUS M3A78-EM and Corsair XMS2 DDR2 @ 800MHz).
What could be causing this? are there any test(s) I could perform to make sure motherboard/RAM combo is working fine?
EDIT: I do have to admit though that I tried flashing the BIOS on the new motherboard, but right before flashing, I realized that the BIOS version that came with the motherboard was the same as the latest one on the ASUS website, so when I decided to cancel the process, the ASUS EZ Flash 2 application (ASUS' flashing utility) crashed, resulting in me performing a hard reset.
EDIT#2: I also have my RAM set to 1600MHz vs 1333MHz (the speed set by my motherboard as default, even though the RAM is 1600MHz native).