My build cpu: Intel i5-6600k. Mobo: Asus z170-e gpu: msi gtx 980 hdd: Toshiba ram: crucial ballistix sport ddr4 8gb. My computer worked fine yesterday then when I turned it on this morning the boot device led light stays on and my computer comes up to the enter bios screen saying press f2 or del to enter bios but nothing happens when I press those keys. I've tried clearing the cmos and taking everything out piece by piece but end up with the same result. Any ideas as to what might be the problem?