Cannot get into BIOS

[Fireblade69]

My computer was showing some strange CPU speeds and it seemed to lose the overclocking from 3.6 Htz to 5.00 Htz so I started the AI Overclocking to correct.

On boot however, the BIOS started the overclocking and got to 38% before returning 'Chassis Intrude' and 'CPU Fan Error' and not booting up. The system is water cooled.

The problem is that I keep pressing the F2 and Del keys on boot to change the settings and I cannot enter the BIOS.

Any ideas please.

TIA

[JohnAb · Accepted solution]

I think the best bet would be to first reset the BIOS to defaults, hopefully that will get it out of whatever loop it has got stuck in. 

[Nate152 · Accepted solution]

 Hello Fireblade69,

Getting the cpu fan error means you don't have a fan connected to the cpu fan header. I'm on a custom loop and get this as well.

When you get the cpu fan error message, press F1 to enter the bios. Go to the monitoring tab and set cpu fan speed to "Ignore". 

[Fireblade69]

Thank you Nate152 and JohnAb. 

I have removed the CMOS battery and then managed to get into the BIOS and turn off the monitoring. 

All is good again. Thank you