Fried Mobo?

[outfieldslayer]

I built a mini itx computer a few days ago. No hiccups, POST on first go.

Used it gaming for a solid 14hours without issue.

 

Then suddenly while playing a game Bluetooth, front USB, and WiFi all went out. But the game was still running totally fine. I quit to desktop, then turned off the PC.

 

When I hit the power button to turn it back on it wouldn't POST.

Fans spin, but that's about it.

 

I've tried everything I can think of to no avail (new bios, CMOS, re-seating everything, removed GPU, tried both sticks of ram)

 

My assumption is a fried MoBo since the cpu and RAM seemed to be working when WiFi+Bluetooth+USB died. As it's Thanksgiving I can't get my hands on a speaker until tomorrow.

 

Thoughts? Maybe there is a non-obvious solution I can try?

 

(Also any thoughts on what might have caused the mobo to die. Bad component from the factory on the board is my best guess)

 

Parts list:

PCPartPicker Part List: https://pcpartpicker.com/list/hQG7h7

CPU: AMD Ryzen 7 7700X 4.5 GHz 8-Core Processor  ($259.99 @ Newegg)
Motherboard: Gigabyte A620I AX Mini ITX AM5 Motherboard  ($129.99 @ Amazon)
Memory: Corsair Vengeance 32 GB (2 x 16 GB) DDR5-6000 CL30 Memory  ($99.99 @ Amazon)
Storage: Samsung 990 Pro 2 TB M.2-2280 PCIe 4.0 X4 NVME Solid State Drive  ($159.99 @ Amazon)
Video Card: Gigabyte GAMING OC Radeon RX 7800 XT 16 GB Video Card  ($479.98 @ Newegg)
Case: Fractal Design Terra Mini ITX Desktop Case  ($139.99 @ B&H)
Power Supply: Asus ROG LOKI 750 W 80+ Platinum Certified Fully Modular SFX Power Supply  ($161.48 @ Newegg)
Total: $1431.41
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2024-11-28 18:57 EST-0500

[Tridefender]

13 minutes ago, outfieldslayer said:

When I hit the power button to turn it back on it wouldn't POST.

Stupid question but is the power button on the FPC? Could have been a dead FPC you know?

 

14 minutes ago, outfieldslayer said:

and WiFi

If it's WiFi module soldered to or connected to motherboard it sounds absolutely bad, in your case if I am not mistaken it's going through a independent slot from PCH, it does sound like dead motherboard/PCH, but I wonder if you can keep your pc running fine to a certain extent without the PCH?

[outfieldslayer]

11 minutes ago, Tridefender said:

Stupid question but is the power button on the FPC? Could have been a dead FPC you know?

 

If it's WiFi module soldered to or connected to motherboard it sounds absolutely bad, in your case if I am not mistaken it's going through a independent slot from PCH, it does sound like dead motherboard/PCH, but I wonder if you can keep your pc running fine to a certain extent without the PCH?

 

Power button on fpc works fine to start the fans spinning. I also tried just jumping the pins which behaves the same.

 

WiFi and Bluetooth are both on board modules.

[Tridefender]

50 minutes ago, outfieldslayer said:

 

Power button on fpc works fine to start the fans spinning. I also tried just jumping the pins which behaves the same.

 

WiFi and Bluetooth are both on board modules.

USB on the back works?

[outfieldslayer]

44 minutes ago, Tridefender said:

USB on the back works?

Hard to test without post, but yes. It works well enough for qflash to run and presumably work. (Mobo LED lights up and usb stick LED lights up).

[Tridefender]

Dead USB = dead PCH, better RMA now