HELP! New Custom Desktop Issue?

[yutubemedia]

I built a new computer, with a i7 950, Kingwin 850 WATT PSU, 8GB RAM, Gigabyte x58-USB3 Motherboard, and everything was working fine for the past 3 days, but then all of suddenly when I turn it on now, ALL the fans go FULL blast, but not when I turn it on, only once I log into windows, and my screen shows up, the fans go nuts! Could this be a PSU error? But why only when windows logs in? I waited 1 minute, but they didnt slow down..

This includes all fans, the PSU fan, the Case Fans, and the CPU cooler fans, so werid...

 

[jedi940]

I would check BIOS settings. Perhaps fan control got disabled. Weird that it only happens in windows though. Usually, its the opposite.