1. CLOCK that won't keep correct time. >>Be sure to check/change the battery.
2. CMOS that won't hold configuration information. >>Again, check/change the battery.
Note about batteries and CMOS: in theory, CMOS should retain configuration information even if the system battery is removed or dies. In practice, some systems rely on the battery to hold this information. On these systems, a machine that is not powered-up for a week or two may report improper BIOS configuration. To check this kind of system, change the battery, power-up and run the system for several hours. If the CMOS is working, the information should be retained with the system off for more than 24 hours.
