EVGATech_GabrielTDear ValkyrieStar, Issues like this would commonly indicate that the motherboard or PSU has failed. If you have access to another PSU I would test this. If the issue persist the board would need to be replaced.
SajinI wonder if your Unofficial X99 BIOS Update has anything to do with this.
bcavnaughRemove the CPU and look for Bent CPU Socket Pins!