Basically, when i turn on my pc in the morning i press the chassis power button and nothing happens, then i flick the psu power switch from on to off and back to on pretty quickly and it turns on. It will then turn itself off so then I must flick the switch from on to off and back to on and the same thing happens. When i do it a third time if finally stays on.
If i turn off the pc with the powerbutton its perfectly fine but once again if i try to turn it on again the power button just doesn't work so i flick the switch from on to off to on again then it will work first try if its within maybe 2 hours of when it last turned off but if any longer such as overnight then i need to repeat the process three times in total.
What is casuing this issue?