Is this a motherboard problem or not?

callumd97

Honorable
Jan 23, 2019
3
0
10,510
Hi everyone, I hope you can help me!

Recently put together an office PC from some used parts on ebay, and I'm running into some really weird problems with it now. It's a Gigabyte H61M motherboard which has a 3470 and 4GB of ram - fairly standard stuff, got a CiT 500w PSU which is 80+ bronze certified, it seems to have been running well and I haven't had any crashes or anything like that so far, no symptoms of a PSU related issue as far as I can tell and of course the system draw is far below what the PSU is rated at.

All was going well for a few months but then one day I stopped getting any signal into my monitor. All the fans and lights were coming on as normal so I tried with a TV in another room and still, no signal, the monitor does not even recognise that there is a device connected to it.

I was using a VGA cable at the time, so I thought that the problem was either the cable or the actual VGA port itself so I bought a DVI to HDMI cable as my monitor does not support DVI, and it instantly worked! Then after a few more days of average use, the exact same thing happened again - monitor has no idea anything is connected but everything else has power and comes on as normal.

I thought, then, that the problem was within the I/O somehow, so I went and bought a cheapish GT520 for the HDMI, downloaded all the up to date drivers from Nvidia and it was all working fine. This was on the 18th! Now, after almost exactly the same amount of time again I'm having the exact same problem, no display output at all! What in the hell is going on with this thing? I don't want to have to spend a lot more money replacing a bunch of parts but I genuinely have no idea what's going wrong with this.

Surely if it was the motherboard it would fail to output 100% of the time, why would it work for a short while after changing what output I am using? Likewise if it was the RAM surely it would fail to POST and again trying new outputs would change nothing? And then similarly if it was the PSU wouldn't that mean sporadic crashes or just a total failure to boot up, completely unrelated to the output being used?

Any advice on this would be really really massively appreciated, I have literally no idea what I'm doing with this now! xD

Thanks in advance
 
It probably is a a cpu problem, maybe the cpu isn't "feed" enough with graphic data to give the gpu to use it and display (whether its onboard or off board)

you can get a cheapo Pentium cpu that costs 10$ that goes into that socket to check my theory. not sure tho