Z97 Gaming 7 blue MSI LED flashing

[quiet talon]

Can't boot the PC, it reboots every 2-5 seconds.
After some auto reboots the LED starts to fast flashing...
(Blue LED, called MSI LED)

Happend without a reason. I only tired to guess my windows password (older pc)

i74790k
16GB RAM
550W PSU
NO Graphics Card
Win10

[hasty vigil]

Oh check how dirty the pc is

This feels like a very dirty old pc

Bad dirty pc needs to get a cleansing

Basically overheating issue

[stiff path]

def need more info, what type of mainboard, the flashing might be error code you get, but without knowing what mainboard it is, hard to say. Question is if it even restarts when in bios. Or if it is a boot problem

[quiet talon]

It restarts bevor I can open BIOS

[quiet talon]

Not realy its very clean

[quiet talon]

Not sure the mobo has a cpu temp Display. It Was around 40-50°

[stiff path]

did you do the switcheroo ? Swap out stuff if possible to see if it boots ?

[quiet talon]

Tomorrow I try RAM switching

[stiff path]

if you can try different psu as well

[quiet talon]

unfortunately not.
The PSU is not that old, I used it before and worked well.

[quiet talon]

tried it without RAM and no HDD. Only CPU, still not working

[stiff path]

so next things i would try is removing the case pins, and shorting to start. (that basically removes the possibility of the case power button having an issue)

if that does not work, resetting cmos would be the next step and testing again

[quiet talon]

yeah, thats an idea.

[stiff path]

also can you let me know what mainboard you have ?

oh its in the title xD

[stiff path]

so according to the manual the light is for debugging, i dont have an msi board 😄 but in the manual you can see the debug codes what they mean

the thing is i have no idea how to interpret the blinking 😄 googling it at the moment

this is from your manual

does the cpu fan even spin up ? did not see it spin at all

[quiet talon]

Yeah it spins

[stiff path]

okay i would try a cmos reset, hopefully some settings are messed up and that fixes it

i assume you know how to do that ?

if that does not work, next step i would do is reseat the cpu, new thermal paste ofc. check all pins

i still tend to think the psu might be an issue, ofc no way to test that without another psu

but clearing cmos is easy thing you can test, and checking cpu is something you can do without getting a new psu

there is also the paperclip test you can do to short the psu to test if it runs on its own, but i do not recommend to do that if you do not know what you are doing.

if you do want to try it : https://help.corsair.com/hc/en-us/articles/360025085372-How-to-Test-a-PSU-Power-Supply-Unit-

[quiet talon]

Don't work.
The motherboard has a cmos clear Button.
Also I have removed the battery

[stiff path]

okay yeah now only thing left is testing psu and/or cpu

[quiet talon]

That's a step I do tomorrow

[stiff path]

gotcha. Feel free to message me again

[quiet talon]

I think I have a other one, but older... but I try it

[stiff path]

oh, and if it helps i am german as well 🙂 (from your name i reckon u are)

[quiet talon]

Unfortunately I can't find or read this code... I don't understand it 🤣

[quiet talon]

Jap auch Deutsch.

[quiet talon]

it restarts so fast, that I cant even open BIOS...

[quiet talon]

I think the mobo is broken!

The PSU standalone is working...
I also tested the mobo without anything attached.

Only thing I can try next week, is a new PSU I ordered for my main PC.

[stiff path]

or its the cpu

[quiet talon]

nahh, the mobo does the same without