Lenovo手提電腦維修]Lenovo X1 Carbon 開機顯示0251:System CMOS Checksum bad-Default configuration used. Real Time Clock Error-Check Date and Time settings Press Esc to continue or F1 to enter Setup.
Old PC - CMOS Checksum Error, please help | TechPowerUp Forums
How to Fix a CMOS Checksum Error
CMOS Checksum Error In Windows 10 [SOLVED]
Replace the battery and the cmos checksum is invalid - HP Support Community - 8150983
Como solucionar el error CMOS Checksum que impide iniciar Windows 10, 8 o 7. (BIOS)
What causes the 'CMOS checksum bad' error on bootup for PC's that were working fine previously (without any memory upgrades)? - Quora