Help: any PSU connected to mobo runs at 100% fan speed


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The system: Intel C2Q 8400; ASUS P5Q PRO; 8GB OCZ 800Mhz
In use from 2010 without any issue
Cleaned the system last week; Now a weird problem: Regardless of which PSU i connect (Corsair CX550/ VS450) 10 minutes after bootup, the psu fans reach 100% speed with full noise. All case fans/ cpu fan/ gnu fan run at normal speed on load/ without load.
Any suggestions as to what exactly is causing this issue? I suspect the motherboard but can't pinpoint the exact cause.
Thank you.


Super Moderator
Staff member
Don't boot into windows instead enter bios and stay there for say 10+ mins and see what happens.
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