I just built a new computer. When I turn it on the motherboard LEDs flash and after ten seconds or so, it turns itself off and then a few seconds later turns itself back on and repeats. I took my old PSU from my old computer so I know that's works. Also nothing displays through monitor. I tried plugging HDMI into onboard graphics with no dedicated GPU plugged in and also tried plugging in GTX 1070 and displaying through there, but nothing. I also don't here the POST beep. Here's a link of a video showing the flashing LED I'm referring to. I tried removing CMOS battery and plugging it back in. I reseated CPU. I also checked to make sure PSU wasn't switched to European voltage, but it has no setting for Euro.
Any help is greatly appreciated
ASRock Motherboard Motherboards Z370 EXTREME4
G.SKILL Ripjaws V Series 16GB (2x 8GB) 288-Pin DDR4 2400 PC4 19200) Intel Z170/X99 Platform Memory F4-2400C15D-16GVB
Intel BX80684I78700 8th Gen Core i7-8700 Processor
Corsair Graphite Series 760T Full Tower Windowed Case - White
Edited by andynov123, 09 February 2018 - 03:43 PM.