GA G31M-S2L NO DISPLAY restart loop .

[mo000]

the motherboard in post card count to code c1 (ram code) and restart
the ram voltage and vtt are correct 1.8v and 0.9v
and ram bios volt is 3.4v
i flash bios
flash bios in new bios chip
the same thing always power on and restart .

[ezzeddin]

Re: GA G31M-S2L NO DISPLAY restart loop .

your problem almost southbridge

[momaka]

Re: GA G31M-S2L NO DISPLAY restart loop .

I imagine you tried different (and known good) RAM modules? Also, just try only one RAM module at a time in either slot. It's possible the RAM slot contacts could be a bit oxidized and thus not making good contact. -OR- since this is LGA775 motherboard, there is also a small chance the BGA under the CPU socket could have been damaged/cracked from a push-pin cooler (those stock Intel heatsinks are known to warp the board quite a bit.) That said, before even thinking about any socket reflows, consider inspecting the CPU socket pins first. Memory errors can also be caused if there is a bad pin (or two... or more) in the CPU socket.