My computer will not shut down, it reboots instead.

[pattesatan]

Have you cleared the CMOS at all? Maybe pull your battery out, clear the CMOS and let it sit for a few minutes.

Each set of ram will have its own specific set of parameters that they need to run properly. Things can get messy when the get mixed up.

Well, as a last resort.

First I'd try booting into a live-usb-linux to dismiss the possibility that it's an issue with Windows. If the same behavior occurs, it's very likely that it's a hardware-problem. If not, more likely your Windows is broken.

This is what happens using @Mindweaver s suggestion:

shutdown /f /t 00


Syntax: shutdown [/i | /l | /s | /sg | /r | /g | /a | /p | /h | /e | /o] [/hybrid] [/soft] [/fw] [/f]
[/m \\computer][/t xxx][/d [p|u:]xx:yy [/c "comment"]]

No args Displays help. Same as typing /?.
/? Displays help. Same as specifying no options.
/i Displays graphical user interface.
This must be the first option.
/l Logs off. This cannot be used with /m or /d.
/s Shuts down the computer.
/sg Shuts down the computer. If Automatic Login on Restart is enabled, automatically logs in
and locks out the last interactive user the next time the computer is started.
Restarts all registered applications after logging in.
/r Shut down the computer completely and restart it.
/g Shut down the computer completely and restart it. If Automatic Login on Restart is
enabled, automatically log in and lock the last interactive user
after the system restarts.
Restart all registered programs after login.
/a Abort shutdown.
This can only be used during the timeout period.
Combine with /fw to clear pending firmware starts.
/p Shut down the local computer without timeout or warning.
Can be used with /d and /f.
/h Put the local computer into hibernation.
Can be used with /f.
/hybrid Shuts down the computer and prepares it for fast startup.
Must be used with the /s option.
/fw Combine with a shutdown option to make the next startup in the
firmware interface.
/e Specify the reason for the unexpected shutdown of the computer.
/o Enter the advanced boot options menu and restart the computer.
Must be used with the /r option.
/m \\computer Specify the target computer.
/t xxx Specify the timeout before shutdown (in xxx seconds).
Valid values are 0-315360000 (10 years). Default is 30.
If the timeout is greater than 0, the /f parameter
is implied.
/c "comment" Comment specifying why the computer is being restarted or shut down.
A maximum of 512 characters are allowed.
/f Causes running programs to terminate without notifying the user.
The /f parameter is implied when a value greater than 0
is specified for the /t parameter.
/d [p|u:]xx:yy Specify the reason for the restart or shutdown.
p indicates that the restart or shutdown is scheduled.
u indicates that the reason is user-defined.
If neither p nor u is specified, the restart or shutdown
is unscheduled.
xx is primary reason code (positive integer less than 256).
yy is secondary reason code (positive integer less than 65536).

Causes on this computer:
(E = Expected U = Unexpected P = Planned, C = Custom)
Type Major Sub Title

U 0 0 Other (unplanned)
E 0 0 Other (unplanned)
E P 0 0 Other (planned)
U 0 5 Other error: computer is not responding
E 1 1 Hardware: Maintenance (unplanned)
E P 1 1 Hardware: Maintenance (planned)
E 1 2 Hardware: Installation (unplanned)
E P 1 2 Hardware: Installation (planned)
E 2 2 Operating system: Recovery (unplanned)
E P 2 2 Operating system: Recovery (planned)
P 2 3 Operating system: Upgrade (planned)
E 2 4 Operating system: Configuration change (unplanned)
E P 2 4 Operating system: Configuration change (planned)
P 2 16 Operating System: Service Pack (Planned)
2 17 Operating System: Hotfix (Unplanned)
P 2 17 Operating System: Hotfix (Planned)


I used a translationthing for it, as I get it in swedish.

 

[leonavis]

Do you have a USB-stick to spare? If so, download a linux-distro, for example use the Fedora Media Writer to write Fedora on that device. Then boot from that stick and try to shut down in the PC regularly after booting into the distro. If it shuts down correctly, the problem most likely lies with Windows.

 

[Mindweaver]

This is what happens using @Mindweaver s suggestion:

shutdown /f /t 00


Syntax: shutdown [/i | /l | /s | /sg | /r | /g | /a | /p | /h | /e | /o] [/hybrid] [/soft] [/fw] [/f]
[/m \\computer][/t xxx][/d [p|u:]xx:yy [/c "comment"]]

No args Displays help. Same as typing /?.
/? Displays help. Same as specifying no options.
/i Displays graphical user interface.
This must be the first option.
/l Logs off. This cannot be used with /m or /d.
/s Shuts down the computer.
/sg Shuts down the computer. If Automatic Login on Restart is enabled, automatically logs in
and locks out the last interactive user the next time the computer is started.
Restarts all registered applications after logging in.
/r Shut down the computer completely and restart it.
/g Shut down the computer completely and restart it. If Automatic Login on Restart is
enabled, automatically log in and lock the last interactive user
after the system restarts.
Restart all registered programs after login.
/a Abort shutdown.
This can only be used during the timeout period.
Combine with /fw to clear pending firmware starts.
/p Shut down the local computer without timeout or warning.
Can be used with /d and /f.
/h Put the local computer into hibernation.
Can be used with /f.
/hybrid Shuts down the computer and prepares it for fast startup.
Must be used with the /s option.
/fw Combine with a shutdown option to make the next startup in the
firmware interface.
/e Specify the reason for the unexpected shutdown of the computer.
/o Enter the advanced boot options menu and restart the computer.
Must be used with the /r option.
/m \\computer Specify the target computer.
/t xxx Specify the timeout before shutdown (in xxx seconds).
Valid values are 0-315360000 (10 years). Default is 30.
If the timeout is greater than 0, the /f parameter
is implied.
/c "comment" Comment specifying why the computer is being restarted or shut down.
A maximum of 512 characters are allowed.
/f Causes running programs to terminate without notifying the user.
The /f parameter is implied when a value greater than 0
is specified for the /t parameter.
/d [p|u:]xx:yy Specify the reason for the restart or shutdown.
p indicates that the restart or shutdown is scheduled.
u indicates that the reason is user-defined.
If neither p nor u is specified, the restart or shutdown
is unscheduled.
xx is primary reason code (positive integer less than 256).
yy is secondary reason code (positive integer less than 65536).

Causes on this computer:
(E = Expected U = Unexpected P = Planned, C = Custom)
Type Major Sub Title

U 0 0 Other (unplanned)
E 0 0 Other (unplanned)
E P 0 0 Other (planned)
U 0 5 Other error: computer is not responding
E 1 1 Hardware: Maintenance (unplanned)
E P 1 1 Hardware: Maintenance (planned)
E 1 2 Hardware: Installation (unplanned)
E P 1 2 Hardware: Installation (planned)
E 2 2 Operating system: Recovery (unplanned)
E P 2 2 Operating system: Recovery (planned)
P 2 3 Operating system: Upgrade (planned)
E 2 4 Operating system: Configuration change (unplanned)
E P 2 4 Operating system: Configuration change (planned)
P 2 16 Operating System: Service Pack (Planned)
2 17 Operating System: Hotfix (Unplanned)
P 2 17 Operating System: Hotfix (Planned)


I used a translationthing for it, as I get it in swedish.

My last suggestion was shutdown /s /f /t 0

shutdown /s /f /t 0

Go back and look at my previous post. Do the sfc restore health to fix any corrupt files. Then do the sfc scan.

 

[pattesatan]

Okay, tried every tip I got from you guys, breadboxed it, using a live linux stick, sfc /scannow, DISM, and it just reboots still, so ordered a PSU tester to check the PSU (I dont have a spare).

So I will check the PSU when the tester arrives.

 

[eidairaman1]

Okay, tried every tip I got from you guys, breadboxed it, using a live linux stick, sfc /scannow, DISM, and it just reboots still, so ordered a PSU tester to check the PSU (I dont have a spare).

So I will check the PSU when the tester arrives.

Im suspecting a faulty gigabyte motherboard

 

[pattesatan]

Im suspecting a faulty gigabyte motherboard

Me too, I found the culprit... a 90 degree ATX24 connector... Both 12V+ pins was "burned", pin 10 and 11. I noticed when I got the PSU-tester.
But the computer works, so I can live with that.
The PSU works as it should.
And, really, thanks to everyone for helping me pin down the problem.

 

[eidairaman1]

Me too, I found the culprit... a 90 degree ATX24 connector... Both 12V+ pins was "burned", pin 10 and 11. I noticed when I got the PSU-tester.
But the computer works, so I can live with that.
The PSU works as it should.
And, really, thanks to everyone for helping me pin down the problem.

Yeah you never mentioned you had an adapter, glad it was stumbled upon before you had a fire

 

[pattesatan]

Yeah you never mentioned you had an adapter, glad it was stumbled upon before you had a fire

Sorry about that, I have had that one more than 2 years, so it slipped my mind.
I will let my 84 year old father check the backside of the mobo, he has saved another mobo for me, 20 years ago.

 

[eidairaman1]

Sorry about that, I have had that one more than 2 years, so it slipped my mind.
I will let my 84 year old father check the backside of the mobo, he has saved another mobo for me, 20 years ago.

If it's working I'd say it's not needed because of esd hazard.

 

[Zach_01]

Me too, I found the culprit... a 90 degree ATX24 connector... Both 12V+ pins was "burned", pin 10 and 11. I noticed when I got the PSU-tester.
But the computer works, so I can live with that.
The PSU works as it should.
And, really, thanks to everyone for helping me pin down the problem.

You are welcome!

At this point, after everything OP has done, I can't think of anything else than that something is faulty

Mainboard or PSU

 

[pattesatan]

If it's working I'd say it's not needed because of esd hazard.

My father is a wizard with a soldering iron, and measuring with an ohm-meter...
So I will let him check, and he gets something to do.