I saw a few of these topics but I did not want to hijack anybodies thread so I made my own. Well to start off my friend gave his mobo with everything psu included to my brother seeing as he had just upgraded and was not going to use it anymore. We brought it home I installed it in a spare case but when I booted it up I started getting a system fan failed this mobo had just been removed a few hours earlier and heatsink had not been messed with. The fan on it turns on fine and seems to be running well I tried entering the bios to try to disable the system fan failed msg but It just wont let me enter bios. A few times it has turned off like 5 sec after hitting the power button right when its starting to boot up I did try another power supply but same problem. I also cleared the cmos but the problem persists. Any help would be appreciated.