3 pin fan connectors on the motherboard

[PtBetsie]

Motherboard is anAZIIEA I thought it had power supply problems (the PS fan worked intermittenly) but it appears to be a problem with connections. Connected the PS fan control directly to the motherboard and it works correctly. The cpu fan was connected to that 3 pin as the cpu fan connection is not working. Temporarily I have the cpu fan connected directly to the psu but with that I have no connection for the case fan. Can just one 3 pin connection (cpu fan) go bad or is there somewhere in BIOS to run it on?

[Rick]

Depending on the bios
You can set the cpu fan to run always or throttle down ( Slow)
as needed

I would check under the health area of the bios and tell it to run all fans all the time

Then add and adjust each one to the correct connection
cpu=cpu, casefan=casefan, ps=ps

IF your mother board supports monitoring the PS that is

It should have a cpu and 2 case fan connection's . ( Most have 2 of these )

[PtBetsie]

The MBD lacks three pin connectors. There is one for a case fan which I have connected the power supply fan to and the cpu fan connector which doesn't work. The PSU is an Antec 300W. Will using adapters to connect the cpu, and two case fans create problems?

[Rick]

No it should not.
BUT you should turn off the cpu fan speed monitor in the bios health area.

If you don't the bios will not read any info from the fan and shut down the system

It is also possible to connect all the fans to the power supply and use a tach lead ( yellow wire ) to allow the bios to monitor the cpu fan speed,
By connecting it to the cpu fan connector on the mother board

Or just disable the fan monitors all together in the bios and run all the fans with no monitoring

Make sure you enable/allow the system to monitor the cpu temperature
And shut down if it gets to hot