My computer occasionally will hang at POST. It will detect the processor, then when it goes to detect the memory it will hang. The first time it did this, I noticed the ATX power connector was slightly loose. The second time, the connector didn't seem loose but disconnecting it and reconnecting it fixed the issue.

Is there anything else that could be afoot? The 24-pin cable isn't modular on my power supply, so doing any sort of voltage drop or resistance testing on the wires would require cracking open the PSU and voiding the warranty. I'm not ready to do that.

I think I'm going to take a look at the motherboard itself this week, see if there are any problems with capacitors, chokes, ect. Also should probably run Memtest just to be sure, 4GB of my 8GB died months ago (still haven't sent it back) and I wonder if this kit could be dying as well. I kinda doubt that, I don't get any memory related problems in Windows.