-I'll Put my PC specs at the bottom-
Okay, I recently started having a slight heating problem with my stock heatsink for my FX-8350 so I upgraded to a Corsair H80i-GT water loop. When I did I also disassembled my computer to clean it out beforehand, per my usual routine when installing anything hardware related.
After installing everything and getting it situated in my case, for some reason my GPU wouldn't output to my screen. The monitor would recognize something had been plugged in but would say "No Signal" yet I could tell my PC was actually booting up on the other hand as all my custom fan speeds would start. I tried practically everything except a different GPU as I didn't have one on hand. I ended up getting a hold of one(an old EVGA 8600GT) and it worked perfectly fine.
Now I'm trying to figure out if my low power supply could have caused the issue. Also if upgrading my psu to a 850W is worth it and may fix the issue, mind you I can take it back within 30days and get my money back, or if I should upgrade my gpu. Which honestly I would love to not have to upgrade my gpu yet lol.
Here are my specs: Component Estimated Wattage
AMD FX-8350 4.0GHz 8-Core Processor 15W - 125W
Corsair H80i GT 70.7 CFM Liquid CPU Cooler 10W - 15W
Asus M5A97 R2.0 ATX AM3+ Motherboard 17W - 70W
Crucial Ballistix Sport 8GB (2 x 4GB) DDR3-1600 Memory 9W - 9W
Western Digital AV-25 250GB 2.5" 5400RPM Internal Hard Drive 3W - 15W
Western Digital BLACK SERIES 1TB3.5" 7200RPM Internal Hard Drive 4W - 20W
Sapphire Radeon R9 280X 3GB Vapor-X Video Card 62W - 250W
Total: 120W - 504W
Plus a random 4GB stick of DDR4-1600 Memory
My PSU is a TR2-500W Thermaltake