Path Technology

If your system clock starts to lose time, or if your computer is more than 4 or 5 years old, the internal battery may need to be replaced.

Many of your computer's important functions rely on it's internal clock being accurate. Each file is time-and-date "stamped" with, depending on the operating system, the creation date, the modification date, and the access date.

Programs like file backup and directory synchronization (for quick and easy data backups) really need this data to be correct.

So, check your system clock regularly. Especially check the time and date if the computer has been off for a few hours or a few days. It should still keep good time.