After a couple years my first motherboard, a Z270 UD3 got stuck in a boot loop with no beep codes, and before a splash screen.
I narrowed it down to not being the drive, graphics card, or the power supply.
I decided to buy a new motherboard, a Z370M DS3H as a replacement, and it does not boot up either, but this time it is not stuck in a loop. The fans turn on for half a second and it shuts down entirely.
I have tested the power supply and graphics card independently in another computer and they worked fine.
I have tested a different drive with an OS on the Z270-UD3 and it did not help, but I did not test that other drive with the Z370M DS3H
I have tested both ram sticks in multiple configurations of single and both, and both motherboards were tested both in a case and on a bench on top of the cardboard boxes they came in.
Is there anything that could be causing both these issues?
Other parts:
Viper DDR4 2x4GB 3200MHz CL 16 1.35V
Intel i7 - 7700K
Intel 256GB SSD
Edit: Immediately before the boot loop problem started happening with the Z270UD3 board, I came in the room to my left screen completely black and Premiere Pro Frozen on my right screen. My right screen is primary through HMDI, and the left is secondary through DVI. I held the power button until it turned off, and when I pressed it again it started the boot loop.
My problems with the Z370 DS3H I have only been using the on board HDMI, not the VGA and my graphics card has not been installed.
I narrowed it down to not being the drive, graphics card, or the power supply.
I decided to buy a new motherboard, a Z370M DS3H as a replacement, and it does not boot up either, but this time it is not stuck in a loop. The fans turn on for half a second and it shuts down entirely.
I have tested the power supply and graphics card independently in another computer and they worked fine.
I have tested a different drive with an OS on the Z270-UD3 and it did not help, but I did not test that other drive with the Z370M DS3H
I have tested both ram sticks in multiple configurations of single and both, and both motherboards were tested both in a case and on a bench on top of the cardboard boxes they came in.
Is there anything that could be causing both these issues?
Other parts:
Viper DDR4 2x4GB 3200MHz CL 16 1.35V
Intel i7 - 7700K
Intel 256GB SSD
Edit: Immediately before the boot loop problem started happening with the Z270UD3 board, I came in the room to my left screen completely black and Premiere Pro Frozen on my right screen. My right screen is primary through HMDI, and the left is secondary through DVI. I held the power button until it turned off, and when I pressed it again it started the boot loop.
My problems with the Z370 DS3H I have only been using the on board HDMI, not the VGA and my graphics card has not been installed.