Hi, Strange issue with my Asus Sabertooth z170 S motherboard. When I shutdown the PC now, the assist fans never turn off. When I power the computer back on I get a anti-serge warning, Bought a brand new power supply but the issue is the same. If after shutting down I turn the PC off at the wall, when I turn it back on again the next day all is okay, No anti-surge warnings. I have tried this with a 650W Cyonic by Seasonic AU-650x, and a XFX 1050W power supply. I have also reset bios to defaults with the onboard jumper. Bios is the latest version. Any Ideas? I have no issue with turning off at the wall on a night, its just strange.