Home Forums Tech Helproom Newly Built PC turns itself on and off repeatedly. Forum Rules | Contact Forum Editor | Report a Post Newly Built PC turns itself on and off repeatedly. eggbloke69 15:12 26 Dec 2016 Locked Newly built PC turns itself on and off repeatedly. All the LED's come on and all the fans come on but then 3-4 seconds later is turns off and almost instantly it turns back on again and repeats. Hardware: Intel Core i5-6500 CPU, Gigabyte GA-Z170 Gaming K3 Motherboard, Palit GTX 1060 GPU, Corsair VS650 Power Supply, 2x 4GB Hyper X Fury Ram, NZXT S340 case. alanrwood 16:32 26 Dec 2016 Check seating of memory sticks and CPU heat sink. Then check seating of Vide Card and power supply plug to it if applicable. Check BIOS for any suspicious settings, maybe set all to default. Fruit Bat /\0/\ 18:38 26 Dec 2016 also check no shorts from motherboard to case This thread is now locked and can not be replied to.