Tuneup will automatically, according to a schedule you determine, defragment the hard drive, scan it for errors, and delete all sorts of temporary and extraneous files, among other things. If you do not think a lot about maintenance, Tuneup is a good way to go. Maybe once every two weeks, if not. The readers say In the column of April 15, a reader wanted to know how to deal with a slowing computer clock. I advised her to replace the battery responsible for keeping the clock on time.
Time is generated by a quartz crystal oscillator.
High-quality crystals are very accurate. However, some motherboard manufacturers do not necessarily install the highest quality crystals, and those crystals will cause a gain or loss in time. No amount of replacing the battery will eliminate this problem. Update the clock periodically, or get a new motherboard. We welcome e-mail from readers, but cannot answer phone queries.