Asus M6 - Bad Checksum CMOS

Trying to help friend fix his Asus AM6 – currently the laptop boots up, we see the Asus screen. it then goes to the AMI bios screen, and then we are met with the error:

Bad Checksum CMOS
Press F2 to run SETUP

However, pressing F2 – actually ANY key except F4, which loads Ez-Flash – yelds NOTHING. I can't even load into the 'Startup' – so I can select to load from CD-Rom or anything. I have LITERALLY tried EVERY key on the keyboard and NOTHING.

Loading into Ez-Flash allows me to flash the BIOS – however, flashing the BIOS to either the one from the CD that comes with the Laptop, or a newly created CD with the latest BIOS from the Asus website on it, yelds no change in the BIOS screen.

I have hit the <o> button multiply times to try and reset and as a LAST result, we ended dismantling the ENTIRE laptop to get to the CMOS Battery, removed it and waited 5 minutes before placing it back in and rebuilding the dam thing – guess what SAME thing! [Not to self, WASTE of bloody time zzz lol]

Does ANYONE have any ideas before I end up stamping on the dam thing?

Thanks – Venomous

 

The BIOS is corrupt, or the BIOS CMOS is damaged. This is why nothing else works, and why your only option is to keep trying to flash the BIOS. Without the BIOS, nothing on the system can work, which is why you have no "startup" options.

Try downloading the BIOS from the manufacturer, and put it onto a DIFFERENT CD-ROM or floppy and try again. Your BIOS you are trying to flash with (what you downloaded the first time) might also be corrupt.

One more thing. Unplug the laptop and take out the battery. Hold the power button for 60 seconds and then try to use the laptop again. Static electricity might have built up in the system and caused this, but I doubt it. However, it is worth a shot.

If that does not work, you might have to replace the motherboard to fix it.