PC Staying on For One Second. Want to Test.

[Sebastian_48]

Asus X99 Deluxe 2
Corsair Ax860i
Intel 6900k @ 4.2

Ever since ive had this configuration, and it has never not been this, I get random "one-click" shut downs and restarts. I looked up the issue and found it was a pretty common problem with my power supply. Tonight however, it did a one click shut off but did not restart. It turns out that now if I click the power button, it stays on for about 1 second, the CPU LED cuts on, then shuts off abruptly. I have reason to believe it is my power supply, but I have also seen the same problem with the board online where it only stays on for 1 second, also with a 6900k. I don't have the resources to test the CPU and Motherboard myself, but I do with the power supply. My computer configuration calls for at least 800 watts. I have a 650 watt power supply currently on hand. Not sure if this is a dumb question or not, but could I still test with the 650 watt to post and/or to windows lock screen safely? My reasoning is that is shouldn't be using 800 watts of power in the BIOS or windows lock screen just yet. Is that Ok?

 

[Aeacus]

While it's safe to boot up your PC with 650W unit, i'm quite sure you'll get the same results as with 860W unit. Because the symptom you're having points towards bad CPU, MoBo or RAM. Since if it were your PSU, you'd see 0 life out of your PC.

Also, what you're running in there that you need at least 800W unit? 2x GTX 1080 Ti in a 2-way SLI?