CPU or Mobo bad?

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thebatmanfan

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Apr 30, 2016
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Hello, I'm having problems with my computer...it won't boot or show anything on screen. I was getting a blue screen of death every once in a while saying "security kernel check failure". I looked it up and it said to update drivers. So I went down my device manager and clicked to update drivers on everything and it found a new firmware update for what I assume was BIOS. I clicked to install and it started to install. The computer needed to restart to complete the install so I clicked to restart. It restarted and the MSI startup screen showed as normal. Then nothing. It sat there for a while that way. It was still on and sounded normal, but nothing was happening. I probably should have let it sit all night, but I decided to hold the power button and power down and then turn it back on. It turned on but still nothing on my screen. Mouse and keyboard didn't light up, and the power button led didn't light up either. Everything else sounded like it was running. I powered down and opened it up and cleared the CMOS by removing the coin battery. Didn't work. I reseated everything. Didn't work. I looked up my motherboard manual (MSI B150 Gaming M3) and saw where there are three led's for diagnosing problems. The led lit said "cpu-indicates cpu not detected or fail."

I ended up sending my mobo back to MSI and they sent me another. I installed everything and turned it on and it started to work. I watched the same CPU failure LED and it cycled through it and the VGA and DRAM failure LEDs fine. They all went off. Restarted after I looked around in the BIOS settings. LEDs cycled fine again. It said "please wait while we install updates" on the MSI screen that always shows up before Windows loads. I waited and it restarted. Black screen again. And the same CPU failure LED is on now. I haven't turned it off myself by hard reset or anything.

It's like it tried to install the same update to BIOS on this mobo too and did the same thing. Is it stuck in a loop? Or is it really my CPU? Would a bad CPU cause my monitor to show nothing and my keyboard and mouse to not light up on power-on? I don't want to keep frying mobo's and processors...whichever is failing.
 
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Flyfisherman
Hi, not really. I've been busy with other things like riding a MC.

But that sounds like a good approach.
Just remember that you should do it in order:
1. Only one SSD/HDD connected at Windows installation.
2. Once Windows 10 is installed run Windows update: Start > Settings > Update & Security => Windows update and restart.
3. Repeat this procedure until there is no more Windows updates.
4. Install every driver from the motherboard manufacturer DVD and restart.
5. Install the antivirus s/w and restart.
6. Run windows update again and restart if necessary.
7. install the latest graphics drivers from respective sait: AMD or nVidia and restart
8. connect any other SSD/HDD to the SATA port and format if necessary (the correct one).

Best...
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Flyfisherman

Flyfisherman

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May 29, 2012
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Hi,

When I red the line ""cpu-indicates cpu not detected or fail." in Your first mobo, then You are telling me there are several problems whit the cpu?

Don't You think it could have something with the CPU to do?
Just a thought.

Is it possible that You can borrow another CPU to put in from a friend or otherwise, just for checking?

Another thing is to check your memory http://www.memtest.org/
Best regards from Sweden
 
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thebatmanfan

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Apr 30, 2016
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Thanks for the quick response!!

Everything was working fine before the BIOS update the first time...other than the occasional BSOD. That's what makes me think it's mobo related rather than CPU related. I guess I can always warranty out the CPU as well. I just want some input before I do anything more.

Thanks again!
 
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Flyfisherman

Flyfisherman

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Hi,
Well, I don't understand really, You have replaced the mobo and the very same thing occurs.
What else can it depends on?

Think of it and see if t t is something there You can just isolate out?
Or is it something I miss here? hehe...
Sorry.
Best Regards from Sweden
 
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thebatmanfan

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Apr 30, 2016
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@flyfisherman I'm just worried that it's stuck in a loop and will update the BIOS on every mobo I put in it and it will do the same thing. I can try the CPU this time though. Thanks for the help!
 
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Flyfisherman

Flyfisherman

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Hi, No worry's,

Don't update the BIOS from whitin Windows, only do this from within the BIOS Setup menu via a USB-stick formatted in 32-bit and have the BIOS file on the root sector.

The USB-stick has to be connected at the back of the computer - not at the front USB-ports!

Then it should not be a problem.. Of course You have to check out the boot priority for the disk, then Save & Exit.




 
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thebatmanfan

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Apr 30, 2016
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Is there a way to remove the Windows driven BIOS update before it updates it again? Before it tries to boot up Windows? Would booting in safe mode bypass the BIOS update?
 
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thebatmanfan

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Apr 30, 2016
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Is there a way to boot to safe mode outside of Windows? I couldn't even get to Windows with the new motherboard before the update happened and the screen went blank.
 
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Flyfisherman

Flyfisherman

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Do You have a Windows disk?
In that case just boot from it and Do Not install, just go to the repair menu and chose > Repair and Windows will restart
During this, before Windows repair menu startas up > You should be able to quickly "hammer" the 'Del' key or if it is the 'F2' repeatedly, until You get the BIOS Setup screen?

If You miss, just do it again.

I can't say for sure.
 
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Flyfisherman

Flyfisherman

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No, I could not get into BIOS without starting up Windows 10, no matter what key [Del] [F2] or [F8] [F12] (for Windows Boot options).
With Windows fast (U)EFI boot there is very hard to do this, unless one boot up into Windows and from there start the Boot options.

But Do You have a Windows DVD to Boot from?
In that case Boot and choose Repair Windows and make sure that You Boot to a Command prompt.

Then just click on Start > type cmd > i the list that comes up > right click on CMD.EXE or if it says Command Prompt and chose 'Run as administrator' > in the Command prompt window type > sfc /scannow and Enter.

This command will check all the system files and try to repair or otherwise replace the faulty ones.
It will also tell you it it had found any problem and if it was able to rapair these.

After that restart the computer.
 
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thebatmanfan

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Apr 30, 2016
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Okay I do have a Windows 10 DVD. I am going to warranty out my CPU, and if that doesn't work then I will try booting from the repair disk probably on a third mobo. If neither of those work I'll change my power supply out, since the only other thing it could be is the cpu power cable from the psu. All of my components are within warranty, as I just built this computer a few months ago.

Thanks so much for the help...I feel a lot better knowing the path forward.
 
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thebatmanfan

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Apr 30, 2016
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Okay so I warrantied out my processor and installed the replacement. I am getting the same problem, and the CPU failure led is still lit on the motherboard. I swapped ram around and no configuration worked. I pulled the power supply out and tested the voltages. All wires on every cable returned the correct voltage reading. I'm back around to the motherboard. It sounds like I'm going to have to replace it again and try to catch it before Windows flashes the BIOS. What do you think?
 
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Flyfisherman

Flyfisherman

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Hi,
I'm sorry for my late response. I've been riding motorcycles in Göteborg last week, far from home 800Km down.

Ok, so You have tried more or less everything?
Let me think about that for a while, because it sounds like there is another problem there...?
Best Regards from Sweden


 
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thebatmanfan

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Apr 30, 2016
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So I should be getting my replacement mobo this week. Have you thought about a solution? My plan right now is to install the new mobo, and boot to disc before the bios can flash, wipe the hard drive, and reinstall Windows 10. Let me know what you think! Thanks for your help so far!
 
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Flyfisherman

Flyfisherman

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May 29, 2012
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20,365
Hi, not really. I've been busy with other things like riding a MC.

But that sounds like a good approach.
Just remember that you should do it in order:
1. Only one SSD/HDD connected at Windows installation.
2. Once Windows 10 is installed run Windows update: Start > Settings > Update & Security => Windows update and restart.
3. Repeat this procedure until there is no more Windows updates.
4. Install every driver from the motherboard manufacturer DVD and restart.
5. Install the antivirus s/w and restart.
6. Run windows update again and restart if necessary.
7. install the latest graphics drivers from respective sait: AMD or nVidia and restart
8. connect any other SSD/HDD to the SATA port and format if necessary (the correct one).

Best of luck from Sweden :)
 
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