I have recently been given an Opti 741 laptop
with System Soft Bios for 8046 / 86 c388 which has been sitting unused for quite some time. On trying to use the unit for the first time I got the error:-

Warning - CMOS Checksum Invalid - run SCU

Fatal - ROM Checksum incorrect

I also get an audible alarm:-

3 short beeps, pause, 1 short beep and two long beeps.

I have checked the CMOS battery which shows it contains the correct charge.

The unit will only work on the mains adaptor as the main battery seems to have no power and will not charge.

Can anyone throw any light on the problem and also let me know of any web sites which relate to the Opti 741 or System Soft Bios.

kc