Hello I registered here hoping I would find an answer. My problem started a while ago, when my pc occasionally would turn off without a warning and without any temperature problem. Recently it did more often + a new problem appeared, it was also powering itself on without any Wake-Up option activated in BIOS. Lastly, as soon as I plugged it in, all the fans would start running even though the power led on the front panel and the display remained turned off. Pressing the power button had no effect whatsoever, maybe just "speeding up" the fans when it was pressed. (tried with older "420w" no-name psu) Should I just replace the PSU or there can be a problem with the mobo or cpu also?