Question Help Needed with BIOS-related error

Dec 31, 2019
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So I've been having issues with my PC ever since I changed some BIO settings. The fans have been running, but there is no video output and the only way to shut off the computer is to unplug it. I've tried flashing the BIOS but that didn't work. I simply changed the BIOS from UEFI to Legacy.
The motherboard in question is a Gigabyte GA-970A-DS3P rev 2