Specs to your current build? List them like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
If your specs are that which are listed in your sig, please find the time to include specs to your thread since the solution to this thread can and will become irrelevant to anyone else in the same boat as you, once you change the specs in your sig space. Sig specs will change over time.
Which BIOS version were you on prior? Bent pins on the processor? Try and replace the old processor, update BIOS(if any pending) and then drop the 3700x in.