CMOS battery not working and CPU fan sensor not detecting fan.

[SamuelRowe]

I recently got a motherboard (second hand) and all is working well except three things:
The BIOS battery doesn't seem to work.
The CPU fan doesn't show proper temps or speeds in BIOS.
And the PSU voltage rails are showing weird voltages.
I recently found that the motherboard didn't have a jumper on the bios pins so I put it on 2-3 (normal on my mobo) and it still doesn't seem to work after replacing the battery.
The next thing is that in the BIOS the temps are shown as 1 degree Celsius and the fan speed as 0 RPM. Lastly, the rails are showing weird voltages (16v on 12v rail etc) and I would really like to get these fixed, could someone please help me out?

 

[rolli59]

Broken board bad PSU? Those are the questions you need answered. Most importantly you need to know if the PSU is really sending out +16volts instead of +12. A multimeter would be able to measure that in a spare molex.

 

[SamuelRowe]

Hi, thanks for the reply. The PSU is a 400w CoolerMaster that I got 2 years ago and has just started showing these voltages since I changed mobo. I read once, if a mobo would ever reach 16v, it would shut itself down to prevent damage, but the board seems fine.

 

[rolli59]

By your description it sounds like the board is bad. It is important that you check with the motherboard manual that you have that jumper you added in the right spot.

 

[SamuelRowe]

Yes, little diagram in white showing where the jumper should be, I placed it in the appropriate position.

 

[evongugg]

Try reflashing the bios.
Is that feasible?

 

[SamuelRowe]

Sorry to sound like a newbie, but how do I do that?

 

[evongugg]

Check the motherboard manual or the manufacturer of the motherboard's website.

 

[SamuelRowe]

Ok, I reflashed the bios with the latest version (was already the latest), and it is still showing the same things in the bios sadly

 

[SamuelRowe]

bump

 

[SamuelRowe]

bump

 

[rolli59]

Bad board!

 

[SamuelRowe]

OK, I think I can live with it though.