Question New (mostly) Build Boot Issues

[borbisschnorbis2000]

I rebuilt my rig this past week but I've been fighting issues with it booting properly from the get go. I've done a lot of troubleshooting over the last few days and I think I've narrowed my issue down but would like feedback if anyone has any. I've isolated my system's inability to boot to the GPU (EVGA 1080ti).

I don't know if it's because the card is failing, has a conflict with the b650 board or (seems least likely) the PSU is undersized. The system boots perfectly fine with no GPU installed. It also boots fine with my old R9 390 installed which leads me to believe there is nothing hardware related wrong with the board. With the 1080 ti installed the system hangs every single time after post at the MSI loading screen (never makes it to Windows, spinning wheel just stops).

Some notes:

* I've done a full memtest86 run on the RAM and it's flawless.

* I've updated the firmware on the 1080ti.

* I'm running the latest GPU drivers.

* I've updated the BIOS to the latest version.

* I've done a fresh Windows 11 install.


I know this is an old card for a new build but I was hoping to hold out for a couple of months before buying a new one.

The Build:


AMD 9800X3D

Thermal right Phantom 120

MSI b650 Tomahawk

Corsair Vengeance DDR5 6400 (32GB)

Samsung 990 Pro M2 Drive (1TB)

I kept the following old components:

Case (NZXT H440)

PSU - EVGA Supernova P2 650W (Platinum)

GPU - EVGA 1080 ti

 

[dwd999]

How are you connecting this all together with that power supply? The motherboard requires 2 8pin connectors for the cpu and the 1080ti requires 2 8pin connectors (or is it the version with an 8 pin and 6pin). But the power supply only has 1 cpu 8pin and 2 gpu 8pin? I would not expect it to all work unless the power supply had at least 4 8pin connectors.

 

[borbisschnorbis2000]

How are you connecting this all together with that power supply? The motherboard requires 2 8pin connectors for the cpu and the 1080ti requires 2 8pin connectors (or is it the version with an 8 pin and 6pin). But the power supply only has 1 cpu 8pin and 2 gpu 8pin? I would not expect it to all work unless the power supply had at least 4 8pin connectors.

GPU has two sets of 8 pins connected. CPU only has one available from my PSU as you said but my understanding is that it only needs something like 2/3 of what a single 8 pin can provide at max draw. Is that not correct? The CPU seems perfectly functional and ran well in cinebench benchmarks.

 

[LordVile]

GPU has two sets of 8 pins connected. CPU only has one available from my PSU as you said but my understanding is that it only needs something like 2/3 of what a single 8 pin can provide at max draw. Is that not correct? The CPU seems perfectly functional and ran well in cinebench benchmarks.

It could cause the hanging in boot though with the initial power spike not being enough.

Also when it’s hanging what do the debug LEDs say?

 

[digitaldata77]

You may want to consider upgrading your PSU.