How to fix System CMOS checksum bad error on Fujitsu lifebook e746 Laptop?
- DDillon HendersonSep 13, 2025
If you encounter the error message 'System CMOS checksum bad - default configuration used' on your Fujitsu Laptop, switch the notebook off, then switch it back on. Press the F2 key to access the BIOS Setup. In the BIOS Setup, select the Exit menu, choose 'Load Setup Defaults,' select OK, and press Enter.








