I have had this build for almost 2 years. Recently the monitor has been going black and the pc reboots randomly while in the middle of whatever game I'm playing. Its happened during several different games. I think it's the graphics card but I am not sure. Also about a month before this rebooting out of nowhere issue started my CPU fan doesn't always start on boot. It wiggles like its trying but usually needs a little push from me to start spinning. Maybe it just needs some cleaning although I've tried that. So now I don't know if the issue if the GPU or CPU. Any thoughts?
CPU: AMD Ryzen 9 3900X 3.8 GHz 12-Core Processor
Motherboard: Gigabyte X570 AORUS MASTER ATX AM4 Motherboard
Memory: G.Skill Trident Z Neo 16 GB (2 x 8 GB) DDR4-3600 CL16 Memory
Storage: Gigabyte AORUS Gen4 2 TB M.2-2280 NVME Solid State Drive
Video Card: Sapphire Radeon RX 5700 XT 8 GB NITRO+ Video Card
Power Supply: Corsair RM750 (2019) 750 W 80+ Gold Certified Fully Modular ATX Power Supply
CPU: AMD Ryzen 9 3900X 3.8 GHz 12-Core Processor
Motherboard: Gigabyte X570 AORUS MASTER ATX AM4 Motherboard
Memory: G.Skill Trident Z Neo 16 GB (2 x 8 GB) DDR4-3600 CL16 Memory
Storage: Gigabyte AORUS Gen4 2 TB M.2-2280 NVME Solid State Drive
Video Card: Sapphire Radeon RX 5700 XT 8 GB NITRO+ Video Card
Power Supply: Corsair RM750 (2019) 750 W 80+ Gold Certified Fully Modular ATX Power Supply