Question Dead CPU? Motherboard? Completely stumped.

[KirunK]

System Specs -
Motherboard: Gigabyte Aorus Master B550
CPU: Ryzen 5900x
RAM: G.SKILL Trident Z Neo Series 32GB 288-Pin RGB DDR4 SDRAM DDR4 3600 (PC4 28800)
Video Card: nVidia GeForce GTX 1660S

So, finally got my Ryzen 5900x together today. Everything went pretty smoothly, other than I had to Q-Flash the BIOS to get it to post initially. I kept getting an AD code, which I eventually diagnosed as an out of date BIOS. Q-Flashed BIOS to the latest version, got Windows installed, updated, etc. Updated to the latest video card drivers and then I started installing motherboard drivers (audio, bluetooth, etc.) and firmware from Gigabyte's site, when my computer randomly restarted/crashed. After restart, it won't post. I keep getting error code 90 and the VGA LED light is lit up on the MB. I pulled the CMOS battery and gave it 15 minutes before starting it back up again. Still hangs at error code 90. Q-Flashed BIOS to a slightly older version, still error code 90. If I pull the video card and SSD, I get error codes 00, 02, 27, dE, and Ad on repeat. Completely stumped at this point on what the issue might be.

 

[Lutfij]

Welcome to the forums, newcomer!

Make and model of your PSU? We're also going to need to know the make and model o your storage device. Try with one stick of ram on Slot A1.

While the system is breadboarded and disconnected from the wall, remove CMOS battery for 30 minutes and press and hold the power button for 30 seconds. If you don't have a power button, short the power +ve and -ve pins for 30 seconds. Drop one stick of ram and try powering up.

 

[KirunK]

Welcome to the forums, newcomer!

Make and model of your PSU? We're also going to need to know the make and model o your storage device. Try with one stick of ram on Slot A1.

While the system is breadboarded and disconnected from the wall, remove CMOS battery for 30 minutes and press and hold the power button for 30 seconds. If you don't have a power button, short the power +ve and -ve pins for 30 seconds. Drop one stick of ram and try powering up.

Thank you!

PSU is a Corsair 850w modular, storage device is a Samsung 1TB 870 EVO sata SSD. I'll try the RAM on slot A1 tomorrow. After removing the power from the PC and disconnecting it from the wall to remove the CMOS battery, should I hold the power button for 30 secs after 30 minutes while it's plugged back in, or while it's still unplugged?

 

[KirunK]

Tried 4 different sticks in RAM slot A1, still continued to get error code 90 on the MB. Removed CMOS battery for 30 minutes and used the CLR_CMOS jumpers by touching a screwdriver to both pins for a couple seconds. Still receiving error 90 on boot.