Hi,

My machine type is IBM Netvista 6842-60J.

I have tried to update the BIOS of my computer. I did this because I replaced my exsisting motherboard with a new one. Then , when it boots it gives this error message,

167 processor bios update not found.
So, I downloaded the BIOS update from the IBM site and updated the BIOS. Actually I didn't update it, rather I replaced a newer version of the BIOS with an older one. Anyway...after the updation the computer won't work. It won't boot. It stops at POST. No Display.

So I tried to recover the BIOS by setting the jumper to CMOS clear and inserting the BIOS recovery diskette and power on the PC. But, there again I get these error messages.
Initially it says that the Keyboard is locked , THen,

System security - keyboard is unlocked
186 security hardware control logic error
your system is now locked.
Turn power to your system OFF and then ON.

What should I do ?. When I turn the power off and then on, the same result. Thank you in advance

I have tried to update the BIOS of my computer. I did this because I replaced my exsisting motherboard with a new one.

Where did the motherboard you just installed come from?

Is it an exact replacement (same make/model number)?

Yes. It's the same model. But its Bios is one level above than the existing one.