So the other day my GPU started buzzing when under load. I isolated the buzzing to the GPU by stress testing individual components within my system. Click for video. 100% not the fans as I slowly ramped them up to 100% while the card was not under load and it didn't happen. Now the card will be randomly glowing red. Click for pic.

Trouble shooting so far:
Reseated GPU. Reconnected all cables (entire system).
Swapped cables (entire system).
Swapped PSU & Cables

MB: Asus Maximus IX Code
CPU: Intel i7 7700K
Cooler: Corsair H115i
RAM: Corsair Vengeance LPX 2666 MHz
GPU: Asus 1080 Ti Strix OC
PSU: EVGA Supernova 1000PS / EVGA Supernova 1200 P2