Startup problems - cpu

nuzzle

Prominent
Feb 6, 2018
7
0
510
Hello! I have a problem with my motherboard starting up...
everything is plugged in and seated correctly.

(With the the cpu, 8 pin, 24 pin, and ram)
The mobo turns on then shuts off immediately.

(Without cpu, with ram, 24 pin, and 8 pin)
Mobo runs fine and stays on
(Same result without 8 pin or ram.)

The mobo led’s suggest the cpu is not detected or it failed.

Specs:
Cpu: i3-6300
Ram: ballistix 8gb 2400 ddr4
Mobo: MSi b250 mortar
Psu: Corsair 750w

Any solution to fix this?
 
Solution


Try a new cpu...

nuzzle

Prominent
Feb 6, 2018
7
0
510


Sorry I meant the mobo led’s (there are no beeps since I have no onboard sound)

 

nuzzle

Prominent
Feb 6, 2018
7
0
510


Yes, I did unplug the 8pin.
I also pulled out the cpu along with the fan too.

 

jacobweaver800

Respectable
Dec 15, 2017
1,539
0
2,460


Sounds like the PSU is failing, try leaving the cpu in and unplugging the 8pin
 

nuzzle

Prominent
Feb 6, 2018
7
0
510


The mobo powers on and stays on. Although, the mobo led still says the cpu has failed or is not detected.
 

ac13044

Honorable
Mar 25, 2016
846
1
11,165


Yea to test can you check with a different cpu
 

jacobweaver800

Respectable
Dec 15, 2017
1,539
0
2,460


With the 8-pin removed it should say cpu failure because it has no power, if it stays on with it unplugged I'd be willing to bet its the PSU. That's a pretty common thing to happen with a bad PSU.
 

nuzzle

Prominent
Feb 6, 2018
7
0
510


 

nuzzle

Prominent
Feb 6, 2018
7
0
510


Sadly I have no other cpu. Just one.

 

jacobweaver800

Respectable
Dec 15, 2017
1,539
0
2,460


Or try a different PSU
 

nuzzle

Prominent
Feb 6, 2018
7
0
510


With a new psu (500w) And with the 8 pin, cpu, ram, 24 pin... the mobo leds blink (the mobo turning on and off continuously)
 

jacobweaver800

Respectable
Dec 15, 2017
1,539
0
2,460


Try a new cpu, if its not that its the motherboard, its possible the power delivery is messed up on it.
 
Solution