Re: Computer turns on and then just dies

On Thu, 21 Nov 2024 12:43:13 -0600, VanguardLH wrote:

> The single beep on cold boot is notifying the video BIOS loaded.  Before
> the mobo BIOS can load, the video BIOS has to load (so you can see the
> POST screen, BIOS settings, and the OS loading).

Sometimes I can get in the BIOS, but after seconds the power is shut
off.
 
> Without knowing the brand and model of motherboard, not sure what a
> MemOK LED might indicate.

I mentioned that in the OP and I've searched the manual: red for a few
seconds and then off is a good thing.

> Were you inside the case touching stuff without being
> properly grounded?

You mean like the thingy on my wrist? No.

> Unplug and reseat the DIMM
> memory modules, and make sure they are fully seated.  Did you change the
> position (slots) of any DIMM modules?

Tried that, several combinations. It's 2 modules; the mobo supports
paired.

> If you are overclocking, DON'T.

I don't.

>  Reset the BIOS (short the 2-pin mobo
> header) to ensure you are using standard settings.

Tried that.

> Don't try to boot with the old HDD installed into the computer.  Leave
> out the old HDD, and boot with no drive installed.  The computer should
> still boot, you get a beep saying the video BIOS loaded okay, the fans
> all spin, but there will be a message on the screen saying something
> like "boot device not found".  Getting that far means the system would
> come up if it found an OS on one of the drives configured in BIOS.

This, I haven't tried.

> Got a multimeter or voltmeter to check the voltages on the 20/24-pin
> connector from PSU to mobo?

That's above my skill. I know how to build a PC and what each part does
(more or less), but that's about it.

-- 
s|b