PC won’t POST

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andymarshall159

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Jan 26, 2018
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Hi,

After having my computer built for a few days I have run into some issues.

I was re-doing some cable management and decided to re-seat my Graphics card into another PCIE slot and now I cannot POST.

Previously, I was able to post fine.

I have noticed that the two debug lights for ‘CPU’ and ‘DRAM’ are both on, but previously this was not the case.

I had noticed this before when building the PC, I hadn’t received the RAM yet and I booted the PC to check the fans were working and both of those debug lights were on, so could it be the RAM?

Unfortunately I am unable to test any other RAM because I don’t have any.

Steps I have taken so far:

Remove everything, took the motherboard out, put it back in and plug everything else back in
Check the CPU pins
Remove and Re-insert RAM
Swap to a different graphics card
Reset CMOS

Also, my specs are:

MSI B350 PC MATE
Ryzen 3 1300X
1 x 16GB DDR4 2400Mhz Crucial RAM
RADEON HD 7870 2GB

Any help would be greatly appreciated!
 
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I tried removing the CPU.

This time it was just the CPU debug light on (obviously because theres no CPU) instead of both CPU and DRAM lights.

Could this mean it's a CPU issue?
 
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When you removed the CPU, did it pull straight out of the socket or did you have to use the hammer to remove the CPU? If it pulled straight out of the socket then it's most likely an issue with your motherboard and your motherboard will need to be RMA'd. I had a similar issue with my X370 board. Check to see if the tabs locking the CPU socket in place are broken or misaligned. If so then that is the case and you should contact MSI ASAP.
 
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Thanks for the reply.

Nope, I have to use the lever to remove the CPU. It seat perfectly and locks in perfectly. It won't just pull out without releasing the lever.
 
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Yeah I'm using the stock cooler, that seats fine too.
 
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Corsair VS 350

It's been fine, I booted into the BIOS plenty of times before this happened with the same PSU, it seems fine and so do all of the connectors. I'm pretty certain it can handle the power requirements of the components I'm using.
 
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Yeah I think that could be your problem right there. Your GPU needs at minimum a solid 500W, 350W won't cut it. I would definitely look at replacing. Your PC isn't powering on because that PSU won't handle that card.
 
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You're getting close to what's safe with that VS 350 but if it booted before you moved things around and now it doesn't I doubt that's the problem.

Fully loaded the test system with a 7870 only uses a little over 250 watts but that's getting close to what the VS 350 can provide on the 12v rail.

https://www.anandtech.com/show/5625/amd-radeon-hd-7870-ghz-edition-radeon-hd-7850-review-rounding-out-southern-islands/17

You probably have something seated wrong. Here's our typical no boot checklist.

http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems

You did unplug the system before moving stuff around?
 
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I'll have another go at trying to POST now.

Yeah, i removed the power cable and switched the PSU off before I took out the GPU a put it into the other slot.


Also, I have booted the system with the 7870 before it stopped working.

I have also tried a passive GT610 and it still wouldn't POST.
 
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Getting your system to boot though is not the same as running it on full load. If you can at least get it to power on and display a picture that's one thing, but getting it to run at anything more than being on idle is when your system will use most of its' power. I would definitely try with another power supply first to see if that is the problem. If not then things would point to the motherboard as the source of the problems.
 
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The Anandtech test system:

CPU: Intel Core i7-3960X @ 4.3GHz
Motherboard: EVGA X79 SLI
Chipset Drivers: Intel 9.​2.​3.​1022
Power Supply: Antec True Power Quattro 1200
Hard Disk: Samsung 470 (256GB)
Memory: G.Skill Ripjaws DDR3-1867 4 x 4GB (8-10-9-26)
Case: Thermaltake Spedo Advance

At full load with a 7870 Ghz Ed pulled 310 watts in Metro 2033. With OCCT that was 259 watts. So a power hungry 6 core X79 system vs his Ryzen 3. His computer uses significantly less.

What part of that leads you to believe his power supply is the issue? It could be, don't get me wrong. But replace the power supply isn't the first fix here.
 
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Yeah, I used the PSU and the GPU in an old pc a few weeks back and it ran fine, so I'm almost certainly ruling it out as the issue.

I tried again using the thread you sent, but no luck.
 
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This is almost EXACTLY the same situation as what USAFRet had happen with that Corsair CX he had. Everything worked fine. Took out all the hardware, used the PSU with a different board and card. PSU took out the motherboard and itself.

Since your system isn't currently booting at all anyhow. I'd bench the whole thing to eliminate everything except for the PSU, motherboard, CPU and memory.

http://www.tomshardware.com/faq/id-1753671/bench-troubleshooting.html
 
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You took the board out of the case to rule out a short with a case screw? Breadboard it. There are instructions in the no boot thread I linked.

The CPU and DRAM lights on the board point to something other than the power supply.
 
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Yeah, all the troubleshooting I've been doing has been without the Motherboard in the case.
 
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You DID plug the 8 pin EPS 12v connector and CPU cooler back in to the motherboard right? In addition to the 24 pin ATX connector?

Memory is populated correctly as per the diagrams in the motherboard manual?

I wouldn't be too surprised if it was the board that took a powder actually. I've seen SIX instances of the B350 PC Mate that were failed boards, this month alone, in various threads where an RMA of the board resolved the issue. I wouldn't assume that was the case without verifying as much as you can, but I wouldn't be surprised either. Seems like maybe MSI is back to their old tricks again.

 
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Yeah I have done both of those, and yeah RAM was in Slot 2 as per the Manual.
 
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