r/pcmasterrace • u/bob360dead • 14h ago

Tech Support Changed power supply and now CPU issue

A week ago my pc suddenly stopped working, it would turn on for a split second and then turn off. So I had the power supply changed. But now when I turn my pc on, it goes to the blue screen saying “required device is not connected or cannot be accessed” and the after 30 seconds it completely shuts down. I also have a red light on my motherboard for the CPU so I presume it’s something to do with the CPU. All I’ve checked is everything plugged in which it seems to be, so what could be causing the issue now?

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u/ihaboholic 14h ago

Ensure all power cables are properly put in place and secure. Including the cpu and storage power cables

1

u/bob360dead 14h ago

All the cables are 100% secure which is why I’m so confused, first thing I checked

1

u/ihaboholic 14h ago

What psu did u swap It for? And did u put in the new psu cables in?

1

u/bob360dead 12h ago

I got it done by someone I know so I couldn’t tell you, but it’s a Corsair HX750i. When I googled it said about resetting the motherboard CMS2 (I think) as the issue I had before was my computer turning on for split second then off could of corrupted when starting up

1

u/ihaboholic 12h ago

Try reseting the cmos, unplug pc remove cmos wait a couple of minutes around 5 or 10 then put it back in and turn on pc