Originally Posted by
gfunkdave
All righty, I happened to have a new power supply I’d ordered when I thought it might be a power supply problem, so I connected it but the computer still doesn’t turn on.
Ah, assuming your mainboard standoffs are still in place and all your cables are connected firmly, then you'd have to try another mainboard. During this process, I'd probably just have the mainboard, PS, ram, CPU and GPU (assuming it's not on your cpu), and see if it'll post, before placing it into your case.