Gigabyte Z790 Elite Mobo often shows little response.
Gigabyte Z790 Elite Mobo often shows little response.
I’m working on assembling a PC from scratch for the first time and facing some posting difficulties. I’m using the Z790 Elite as my motherboard, which includes LEDs meant for troubleshooting but aren’t lighting up. Initially, when I tried to boot, the LEDs showed an error related to VGA, which I thought resolved by using the correct 12VHPWR cable for my 4070. After restarting the PSU, the board didn’t light up beyond a few thermal LEDs that briefly blinked when the PSU powered on. I’ve tried clearing CMOS, swapping to the latest BIOS via QFlash, and even tested the PSU alone, but nothing works. The keyboard connects and powers on, yet no other signs of functionality appear. Any advice would be helpful! Components: CPU – Intel i7-137000K, VGA – ASUS Dual 4070 OC Edition, PSU – MSI AB50G, RAM – 2x Corsair Vegeance CL36, SSD – Samsung 980 Pro with heatsink, Motherboard – Gigabyte Z790, Cooler – NZXT Kraken 240 RGB.
Have you experimented with booting directly from the iGPU, without the RTX 4070? Also confirm the DIMM setup matches the board—slot 2 over 4 or 2,4 for dual channels. Then test one stick in slot A2 individually. Q-flash isn’t ideal; I had to return a Gigabyte board after it failed to boot fully post-splash and required three attempts with different UEFI settings. I’m uncertain if the EEPROM was replaced or if the flashing method changed at the repair shop. As the third Gigabyte AM5 board I’ve purchased for multiple setups, I’ve had to perform Q-flash several times before.
Thanks for the feedback! I tried booting without the GPU and followed the 2 > 4 dual-channel method for RAM. Running a single stick on the A2 channel didn’t make much difference. It seems I might need to return the board and let someone more skilled handle it.
Another example you might try is running a POST without any RAM and checking if the same issues appear. This suggests the RAM could be faulty, and the simplest solution is to discard it and purchase a DDR5 kit from a store like Best Buy, test it, and then throw it away after 14 days if it’s no longer needed.