Need more help with video output

ProjectBox153 · September 21, 2020

Hi everyone. I made a post last week about a system that I got recently and the issues it was giving me. I will put the original post below for reference rather than typing it all back out here. I had more time to test the system yesterday and this is what I got, and the results are strange to me:

The system still will not output any video through a PCIe GPU (I've tried a couple so far, including the GTX 550 Ti that was originally part of this system and is known to work fine)
The system WILL not output video through the integrated graphics, but only when there is no dGPU installed despite the UEFI settings
The integrated graphics will only output through VGA, not DVI. I've yet to try HDMI as I don't have a monitor handy in my workshop with HDMI
Using the iGPU through VGA works fine, and the system proceeds to boot up completely normally and loads Windows without issue
When a dGPU is installed in the system the board will either hang on VGA_LED or BOOT_DEVICE_LED. It doesn't go past either of these with a dGPU
Without a dGPU installed the board has gotten hung up on VGA_LED a couple times, but hitting reset seems to get it to work

As you can tell I am very perplexed here. I have a couple more GPUs I can try in case this system is just being picky, but I will have to pull them out of systems in order to try them. I have a few cards I can use to try this, including a Radeon HD 3450 256MB, a Radeon HD 3870 512MB, a Radeon HD 4670 512MB, 2 Radeon HD 5450 1GB cards, a Radeon HD 6870 1GB, a Radeon R9 270 2GB (this card has VRAM issues and has a corrupted image but will work without a driver installed), a couple older GeForce cards (9500GT, 8400GS), a GeForce GT 710 2GB and if I need to I am willing to try my Radeon RX 570 4GB. Out of all these cards I am hoping I have something that may work. In addition I also have a few other CPUs that should work if I need to try a different CPU. I've got a couple Core i5-2400 chips and a Pentium G630.

Does anyone have any more ideas about this? I know it's an old board and I can't complain much as the entire system (case, PSU, 16GB of DDR3, motherboard, GPU, CPU, etc.) was free and wasn't guaranteed to still be working, but if I can get it up and running it would be great for a living room gaming rig as I currently don't have anything in there to play games on and my house isn't really well suited to in-home streaming. Any ideas would definitely be appreciated!

Here's the original post I made:

ProjectBox153 · September 27, 2020

As of now this is solved. I swapped the i7-2600 out with an i5-2400 and it worked just fine. I played around with it and it seemed to be stable, so I put the i7-2600 back into it and it's once again working. This is the first modern ASUS board I've used, so I wasn't too familiar with the quirks they can have. Apparently this board is known to have issues outputting video to a GPU, and there were a lot of posts online about it.