Hey all, tldr my computer never goes past the POST screen. Restarting it a few times and looking around (but not changing) the BIOS, then restarting it some more led to Windows 10 eventually loading, though I'm not sure what changed that enabled it to do so, but now after restarting again it won't boot Windows and I can't even get it to go into the BIOS.
Motherboard is a Gigabyte Z490 Aorus Elite AC. CPU is an Intel 10700K. Four 32gb sticks of G Skill RAM. GPU is a GTX 1070. My Windows 10 is installed on a Hynix M.2 NVMe drive and there are two raid 1 HDD arrays (HGST and Seagate) and a SanDisk SSD drive connected. EVGA Supernova 850 G2 power supply.
To go into some more detail, I went to backup my computer and opened it up and attached a couple of drives to it to backup to. I then turned the computer on and it wouldn't go past the POST screen. Restarted it a couple times with the same results. Then when went to the BIOS and looked around but nothing looked off, and it seemed to detect that there was a boot drive. I exited the BIOS and I don't know if it was after that restart or trying to restart it a couple more times but the computer finally loaded Windows, but I don't know what I did to cause anything different to happen.
I figured maybe it had something to do with the backup drives causing some weird issue, but I was able to use them to backup my data. I turned the computer off, took the extra drives out, restarted the computer and then had a similarly difficult time getting the computer to start again, but again Windows eventually loaded. I restarted the computer several days later, and now it won't go past the POST screen no matter what I do. It also now won't let me load the BIOS no matter how I've tried to tap the delete key.
I've tried clearing the CMOS by shorting the jumpers and by taking out the battery for a time (and replaced it with a new one), neither of which seemed to cause any changes.
I tried taking all the RAM out and trying different combinations of sticks in different slots. None of the combinations I tried seemed to change anything except, strangely just having one in the first slot led to the computer not even entering POST. The motherboard has four little LEDs labeled VGA, CPU, DRAM and BOOT, which I'm guessing have something to do with testing or indicating an error. When the computer was stuck in POST, the BOOT LED was lit, but when the one stick of RAM was in the first slot, the DRAM LED was lit. I didn't see in the manual where it mentions those lights or almost anything to do with troubleshooting, though I certainly could have missed it.
I'm considering replacing the motherboard with the same model and hoping that things magically boot up and run fine. Before I do that, does anyone have any ideas as to what's going on or how to fix it? Thanks!!
