it was the mobo (I bought a new mobo since the ram and the uefi wasn't working correctly, on the ram part it only went up to 8gb but I have 12gb. uefi wasn't working, it always gave me an error when trying to cut on( I paid no mind since someone told me it was an old pc problem ) but now that works too!!) so everything is now in working order and it does not cut off
I have a Dell optiplex 790 and the igpu went out a few months ago. I finally got my hands on a graphic card and it works. but now the pc shuts off every 30 mins exactly(I timed it in windows and bios, same results). also I think its INTEL ME so I go to update it but the program says my pc not supported. and plus I can't even get into the MEBx although is says it launching once I press CTRL+P. any known solution my specs: CPU: INTEL CORE I-5 2400GPU:    OLD: IGPU    NEW: GTX 1050 TIRAM: 8GB DDR3HDD1: 1TBHDD2: 500GB
pc shuts off after exactly 30 minutes