ROG Strix E-570 quick degraded to no indication of ANY BIOS start (no beep)

[asus-rookie]

I have an E-570 setup running an AMD Ryzen 7 chip with a Linux Mint OS, and a GEFORCE RTX-3070-Ti GPU. I recently purchased an Thermalake ATX case, to replace an older ATX case, and proceeded to slowly and methodically transplant my hardware to the new tower. When I was done, I did a test startup and everything seem to be ok; all drives were detected, the display and other hardware setting were fine. The only issue initially was that the Ethernet was not working despite system saying a connection was found. I then restarted the system to see if that would help, but then the system booted into a low resolution (1024x728) mode and the system said that a display was not found. After a couple of reboots, I got nothing: no BIOS beep, nothing on the screen, no indication of activity. The motherboard had a q-code of AA, for winch I could not find a clear definition. When I pulled the 3070 and tried to run display off of the motherboard, I got a 9E q-code on the board and still no activity. I checked all the connections and I cannot find a loose or missing one.

Any diagnostic or instructional suggestions are welcome!

 

[cloudzat]

Sounds like something got slightly unseated during the case swap and now it’s stuck before POST. The “AA” code usually means it was in a normal boot state, and “9E” is often PCIe/boot device related, so I’d go straight to a bare-minimum boot test.

Here’s what to do:

1. Full power drain + clear CMOS
   Shut down, flip PSU switch off, unplug it, hold the power button 15 sec.
   Then clear CMOS (button/jumper or pull battery for 5 mins).
   
   
2. Reseat the basics
   *24-pin ATX *8-pin CPU power (top left) *RAM (try 1 stick only in the recommended slot) *CPU cooler pressure (don’t overtighten)
3. Boot with minimum parts
4. Motherboard + CPU + cooler + 1 RAM stick + GPU only.
   Disconnect all drives and USB devices.
   
   
5. GPU sanity check
   Reseat the 3070 Ti and make sure ALL PCIe power plugs are fully clicked in.
   Try a different PCIe slot if possible.
   
   
6. If your Ryzen has no iGPU
   The motherboard HDMI/DP won’t output anything without an APU, so don’t rely on that test.

If it still won’t POST after that, the next suspects are a bad riser/stand-off shorting the board, or a damaged PCIe slot/GPU. Easiest confirmation is testing the GPU in another PC or trying a spare GPU in this board.