No display and/or POST

[TheGhostMan]

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Celeron G1840 2.8GHz Dual-Core Processor (Purchased For $0.00)
Motherboard: MSI H81M-P33 Micro ATX LGA1150 Motherboard (Purchased For $57.62)
Memory: Crucial Ballistix Sport 4GB (1 x 4GB) DDR3-1600 Memory (Purchased For $32.00)
Storage: Western Digital Caviar Blue 500GB 3.5" 7200RPM Internal Hard Drive (Purchased For $0.00)
Video Card: Asus Radeon R7 370 2GB Video Card (Purchased For $135.00)
Case: Rosewill FBM-01 MicroATX Mini Tower Case (Purchased For $50.83)
Power Supply: EVGA 430W 80+ Certified ATX Power Supply (Purchased For $51.00)
Total: $326.45
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-02-08 07:26 EST-0500

So anyways since several months ago that I've upgraded my main PC to an i3 4170 and a used MSI Radeon HD 7850 2GB, I was thinking of building a backup gaming PC using the Celeron G1840 and getting a used R7 370 2GB. I managed to build the PC successfully this afternoon and the PC powered on without any issues. Hell, the card didn't even use that much power (this build uses no more than 300 watts recommended). I was currently installing a program after I've installed Windows 7 again (a uefi version of Windows 7 nonetheless) when the PC suddenly shuts off and then turns back on again and there's not a single display showing. I've tried re-seating the RAM, disconnected the GPU (and then reconnecting it again), etc. And even more so? The LED indicators have stopped working (although the power switch and the reset switch still works).

So I'm all out of ideas. I certainly don't want to send the PSU or the motherboard back again. So are there any solutions to this problem?

 

[SgtScream]

Ok so if I understand you correctly:
You have two pcs, but the backup pc is the one you're having issues with. Did you recently put this together?

 

[TheGhostMan]

Ok so if I understand you correctly:
You have two pcs, but the backup pc is the one you're having issues with. Did you recently put this together?

Yes. The PC that I've built last year in 2015 (prior to upgrading the aforementioned CPU and GPU) had a Celeron G1840 and a used Radeon HD 7770. I basically re-used the Celeron g1840 for the backup PC. Also my main PC (the one with the i3 4170 and the 2GB GDDR5 HD 7850) had an Antec VP450 and a new motherboard (The Asus H81M-A) after the first attempt on building the first PC didn't go so well since the motherboard was DOA (and I thought was the PSU as well but it wasn't the case),

Anyways, from what I've discovered I think it's the motherboard that probably shorted out since the PSU rebooted my backup PC and since then hasn't POST nor display much of anything. So I do plan on buying a new motherboard soon if possible.

 

[TheGhostMan]

Update: When I was reseating the motherboard I noticed that two of the standoffs were loose and were even screwed onto the bolts. So I had to reseat the two loose standoffs and tighten the standoffs that were loosened. I also noticed that the motherboard was very slightly bent so that probably explains why the PC wasn't posting and displaying anything aside from a black screen. This also explains that the motherboard might have shortened.

This is very strange to me since despite that, the PC prior to not posting was working just fine and even during the installation of windows 7 it rebooted without any issues. So in this case, I might have to get another motherboard since the one I have (The MSI H81-E33) is dead at this point no matter what I do (even after resetting the CMOS battery).

 

[TheGhostMan]

Another update: Good news is that the new motherboard had arrived yesterday and I've managed to get the PC to POST with the new motherboard. And this time I checked twice to make sure that the standoffs were screwed in the case properly and tightly. So the installation of the new motherboard went off without a hitch. =)

Plus the ASUS H81M-E board didn't cost too much for purchase (It was like 65 Canadian dollars for it brand new off of Ebay). So yeah, I'm very happy and here's hoping that my budget backup gaming PC will hold up for a very long time.