Today my computer shut down without any warning, and haven't turned back on. No reaction to power button. I can start the PSU manually by shorting two wires. It has happened two months ago exactly like this. Back then I returned the motherboard to the shop, and bought an other one immediately (sorting out manufacturer warranty usually takes months here, I obviously needed a replacement to continue my job). I thought it was a simple motherboard failure. Now it turns out, that something else is also at fault. Can it be anything besides a failing PSU?
Both motherboards were Z97 (first one Gigabyte, second Asus), same CPU (4790k, base setting, no overclock). The PSU is an FSP Raider 750. Also the PSU seems to be correctly working (voltages are fine probing with a DVM). It was bought in 2013.
I also have to note, that today the PC turned off exactly when I turned an externally powered USB-hub on. The first time there was nothing power-related that I remember.
Any input appreciated. Thanks, cheers!
Both motherboards were Z97 (first one Gigabyte, second Asus), same CPU (4790k, base setting, no overclock). The PSU is an FSP Raider 750. Also the PSU seems to be correctly working (voltages are fine probing with a DVM). It was bought in 2013.
I also have to note, that today the PC turned off exactly when I turned an externally powered USB-hub on. The first time there was nothing power-related that I remember.
Any input appreciated. Thanks, cheers!