The computer turns on normally and I see the Bios access screen. the monitor stays on for about 20 min. then shuts off for 5 min. after that its on for 10 min. off for 5 min. the specs are i7 5930K, liquid cooled. on an MSI X99A Raider MB, 48 GB of Corsair 2400 memory, Samsung M2-950 SSD, Samsung 850 SSD, 3 TB of HD, LSP Ultra 750w power supply, EVGA Geforce GTS 980 Ti Classified. I haven't switched cards but am going to switch connections now. Thanks