MSI EZ Debug CPU light turns on after my PC Shutsdown?

[Pie_Inspector]

I noticed that when I shutdown my PC after the shutdown process has finished the psu, heatsink and sometimes the case fans stay on, also the motherboard led and the debug light. I built the PC myself in Sept 1 and it has been running like this everyday since I built it. Once the PC starts the post process the EZ debug light goes off and the PC functions completely normal. I have been just turning off the switch on the back of the PSU to kill the power to the components ever since I have noticed it.

Things I have tried:
-Enabling the EuP setting in the BIOS
-Changing what the Sleep/shutdown buttons do in Windows settings
-Disabling fast boot in windows settings
-Making sure no devices are set to wake up the PC

Thanks in advance for any advice

[rotNdude]

If you read the manual, you may notice this is done intentionally since auxiliary power is on when the computer is turned off. The fans running for a while after the PC is turned off is to cool down some components.

[Pie_Inspector]

Publicado originalmente por rotNdude:

If you read the manual, you may notice this is done intentionally since auxiliary power is on when the computer is turned off. The fans running for a while after the PC is turned off is to cool down some components.

I usually wait until the CPU is around 38 celsius before I shutdown my PC, and I also have tried leaving it on over night with no luck, it stayed running for at least 8 hours last time I tried, but i'll try again thanks for the advice.

[shanqs]

Short of it being a faulty component(s), issues like pc not powering off after OS shutdown can usually be fixed by flashing the motherboard BIOS to the latest version. Granted most users are either scared or unwilling to go through the process but if you want to check:

Open Run prompt (Win+R) and enter msinfo32. Look next to BIOS Version/Date noting the number and date. Go to MSI support download site, search for your board by model number and compare the latest version listed there.

If there is a newer one and you decide to do it, read the manual section carefully although it's not as dangerous as it used to be. I've had my board since October and flashed three times already as there have been that many revisions since then.

Otherwise, if old bios is indeed the issue, there is no harm in not updating and living with it, besides shortening the life of the cmos battery which will last for years regardless.

[Pie_Inspector]

Publicado originalmente por §hλŋqʂ:

Short of it being a faulty component(s), issues like pc not powering off after OS shutdown can usually be fixed by flashing the motherboard BIOS to the latest version. Granted most users are either scared or unwilling to go through the process but if you want to check:

Open Run prompt (Win+R) and enter msinfo32. Look next to BIOS Version/Date noting the number and date. Go to MSI support download site, search for your board by model number and compare the latest version listed there.

If there is a newer one and you decide to do it, read the manual section carefully although it's not as dangerous as it used to be. I've had my board since October and flashed three times already as there have been that many revisions since then.

Otherwise, if old bios is indeed the issue, there is no harm in not updating and living with it, besides shortening the life of the cmos battery which will last for years regardless.

Do you think the " Enhanced MSI Fast boot function" in the BIOS update 3.2 could be related to this issue?

https://www.msi.com/Motherboard/support/B250-GAMING-M3

[shanqs]

Never used MSI boards so can't say for sure. Seeing that the latest is newer than when you got your board, version 7A62v34 would be the one to use if you decide to do it. It will include all the previous changes.

[Pie_Inspector]

Publicado originalmente por §hλŋqʂ:

Never used MSI boards so can't say for sure. Seeing that the latest is newer than when you got your board, version 7A62v34 would be the one to use if you decide to do it. It will include all the previous changes.

What are the risks associated with flashing the BIOS? From what i´ve seen it looks like a quick and seamless process.

I've kinda had a feeling that it was a motherboard/BIOS issue, do you think I should flash the BIOS for this issue?

[shanqs]

Publicado originalmente por Pie_Inspector:

I've kinda had a feeling that it was a motherboard/BIOS issue, do you think I should flash the BIOS for this issue?

In the link you posted, at the very top there is another link to instructions on how to flash. With modern boards there are usually a couple different ways it can be done. Through a windows app or the existing bios itself. In your circumstance, the latter is best.

Like I previously said, never used MSI boards before but process should be similar. Download the new bios and put it on a usb stick. Restart pc and enter bios. Then what I usually do is 'load optimized defaults' save and exit. Re-enter bios and flash the new. The pc may go off and on a couple of times afterwards. Once it POST, enter bios and again 'load optimized defaults' save and exit. Finally enter bios again and enter your custom settings, if any.

The parts about optimized defaults may be specific to Asus boards so it's best to follow the directions MSI gives.

As far as dangerous, if the power were to go out that would be bad. But newer boads usually have two bios or a flashback option that can be done with the pc completely powered down. So the risks are a lot less than in years past of bricking your board.

If the new bios does not solve the issue, it would be time to assume that either your PSU or MB is faulty.

[Pie_Inspector]

Alright, I decided to go ahead and flash the BIOS but unfortunately it did not resolve the issue. About the 'loading optimized defaults', shouldn't it already be set to factory settings by default when you flash the BIOS?

Loaded the optimized defaults and when I went to exit the BIOS it said that I did not make any changes, even though I noticed that it did change back some of the minor things I changed like the EuP setting.

[shanqs]

If you have another up to spec PSU to swap out to try to narrow down the cause would be next. If not, maybe take the pc apart and reseat everything outside the case and try, in the event the motherboard wasn't seated correctly in the case causing some kind of short (unlikey).

If all fails consider RMA on the board ... or ... live with it. The fans running indefinitely after shutdown is really strange.

[Pie_Inspector]

Yeah, also the motherboard led's also stay on after shutdown so I feel like it is not shutting down properly. I have also noticed that when I put my PC to sleep the CPU light on the MSI EZ debug comes on and my PC did not want to wake from sleep until I hard reset it. I think living with it would just be the best option until I decide to upgrade my CPU/Motherboard in the future.

[shanqs]

You can also try reseating your cpu, and ram making sure they are in the proper slots, and checking that the 24 and 8 pin power connectors are fully seated as well.

If you have two sticks of RAM, make sure they are in the 2nd and 4th slot (DIMMA2 & B2) on that board. If you reseat the cpu, look for bent pins in the socket.

[Pie_Inspector]

Yeah I'll try adjusting the RAM in different slots when I clean the inside of the case, and also check all the cables. Now that I look at it, I remember that I had a hard time unplugging the 8 pin CPU connector and when I look at the cable connection to the mobo, there is a slight tiny gap between the plastic tip to where it connects on the motherboard, I'll try using a bit more force to push the cable in and see if it makes a difference. I feel like if it was the cable it wouldn't POST at all, but I may be wrong

[shanqs]

Strange things to do I know, but you have a strange issue. It could very well be a bad part, but if you have the energy and patience, you can rule out human error before coming to that final conclusion. Post back afterwards ... good luck.

[Moose Rancher]

Did you ever find a resolution to your problem Pie_Inspector? I'm having the exact same issue with my PC, I have an MSI Z270 SLI mobo. The PC runs fine, but it won't ever fully turn off and the EZ debug CPU light illuminates while the fans stay running after I try turning off the computer. When I turn on the computer, I have no performance issues and my temps and usage seem completely normal. My only thoughts are that 1) the motherboard needs to be replaced or 2) maybe the power source needs to be replaced.

I've taken apart and rebuilt the computer, reapplied thermal paste, unplugged and replugged the 8pin CPU power cable and the 16pin ATX power cable. I updated the BIOS to the latest version, and it feels like I've done everything short of a fresh install of windows. I don't have spare PC parts at my disposal, otherwise I would try a different power source or mobo to see if that fixed the issue.

The fans and EZ debug CPU light will stay illuminated for days if the power source isn't turned off, so I don't think it's some cooling mechanism. The PC ran perfectly fine without this issue for about a year after I built it, but now I'm not sure what to do.

[Pie_Inspector]

Publicado originalmente por Moose Rancher:

Did you ever find a resolution to your problem Pie_Inspector? I'm having the exact same issue with my PC, I have an MSI Z270 SLI mobo. The PC runs fine, but it won't ever fully turn off and the EZ debug CPU light illuminates while the fans stay running after I try turning off the computer. When I turn on the computer, I have no performance issues and my temps and usage seem completely normal. My only thoughts are that 1) the motherboard needs to be replaced or 2) maybe the power source needs to be replaced.

I've taken apart and rebuilt the computer, reapplied thermal paste, unplugged and replugged the 8pin CPU power cable and the 16pin ATX power cable. I updated the BIOS to the latest version, and it feels like I've done everything short of a fresh install of windows. I don't have spare PC parts at my disposal, otherwise I would try a different power source or mobo to see if that fixed the issue.

The fans and EZ debug CPU light will stay illuminated for days if the power source isn't turned off, so I don't think it's some cooling mechanism. The PC ran perfectly fine without this issue for about a year after I built it, but now I'm not sure what to do.

I haven't found a resolution to the issue, it's weird how you say it started to occur after around a year after you bult it, if I recall correctly I noticed that it has been occuring after a couple of weeks from the time I built my PC. Just curious what particular model of PSU do you have in your PC?