CentOS - Nov 2020 - Apologies - possible hardware problem?

Good afternoon,

I have a home workstation with an AMD CPU, Titan V GPU, 32 GB of memory,
and a root SSD and /home on spinning disks.

Right now it has xubuntu 18.04 on it and it would boot fine. I shut it down
and restarted it to get an inventory before I put CentOS 8.2 on it. It
won't boot now. It gets to the grub menu and freezes. I can't use the
keyboard to select an item in the menu and I can't press enter to make it
boot or press "e" to edit the boot line. It just sits there (seemingly
forever). Here's what I've tred:

1. New keyboard/mouse - no change

2. Different monitor - no change

3. Booting from the CentOS 8.2 iso on a USB stick - no change

4. Replacing the TItan V card with a GT 1030 NV card - no change

When booting from a USB stick, I get the BIOS splash screen and press
"DEL"
to get to the menu, but the menu never shows up. It just freezes.

This one has me stumped. Not being able to boot from a USB stick is really
puzzling. I've never seen that before. Possible bad MB?

My apologies for using the list to help debug problems but since I'm moving
to CentOS 8.2 I thought people might have some ideas.

TIA!

Jeff

On Sun, 2020-11-15 at 18:54 +0000, Jeffrey Layton wrote:
> Good afternoon,
> 
> I have a home workstation with an AMD CPU, Titan V GPU, 32 GB of memory,
> and a root SSD and /home on spinning disks.
> 
> Right now it has xubuntu 18.04 on it and it would boot fine. I shut it down
> and restarted it to get an inventory before I put CentOS 8.2 on it. It
> won't boot now. It gets to the grub menu and freezes. I can't use
the
> keyboard to select an item in the menu and I can't press enter to make
it
> boot or press "e" to edit the boot line. It just sits there
(seemingly
> forever). Here's what I've tred:
> 
> 1. New keyboard/mouse - no change
> 
> 2. Different monitor - no change
> 
> 3. Booting from the CentOS 8.2 iso on a USB stick - no change
> 
> 4. Replacing the TItan V card with a GT 1030 NV card - no change
> 
> When booting from a USB stick, I get the BIOS splash screen and press
"DEL"
> to get to the menu, but the menu never shows up. It just freezes.
> 
> This one has me stumped. Not being able to boot from a USB stick is really
> puzzling. I've never seen that before. Possible bad MB?
> 
> My apologies for using the list to help debug problems but since I'm
moving
> to CentOS 8.2 I thought people might have some ideas.
It's not clear to me if the keyboard is working or not.  I'd try a PS/2
keyboard if it doesn't and/or unplug and replug the USB one when the
computer is frozen.  What happens when you boot without a keyboard?

Put a minimal amount of RAM in and go through all of the modules to see if
one or some of them are broken.

Replace the power supply.

Replace mainboard.

On Mon, 2020-11-16 at 09:58 +0100, hw wrote:
> 
> [...]
> Put a minimal amount of RAM in and go through all of the modules to see if
> one or some of them are broken.
Replace all RAM or test it in another computer.
> Replace the power supply.
Replace CPU or test it in another mainboard.
> Replace mainboard.
If the board has a backup BIOS, use that to boot.