I just assembled this new build with a Gigabyte B460 MB, i5-10600KF with a Hyper 212 EVO, 16 GB RAM, and a 500 GB M2 drive. I reused my old case, GT 1030 graphics card, Antec 520w power supply, and a 4TB 5400 drive, 250 GB SSD, and 2 DVD drives. I installed Windows today and it has been running for several hours fine then suddenly in the past hour is has shut down and immediately turned back on 4 different times. I am not doing anything labor intensive or anything, just browsing, using Office, etc. The fans are all running and I do occasionally hear one changing speeds. What do I check first?