During use, and especially on overcharge, the water in the electrolyte splits into hydrogen and oxygen. The battery begins to gas, which results in water loss. In flooded batteries, water can be added but in sealed batteries, water loss leads to an eventual dry-out and decline in capacity.
Virus. The first possibility, and maybe the most common computer ailment, is a virus. Viruses can do any number of things to a computer, but while theyâre stealing your data or ruining your files, theyâre using up precious system resources that could be used for other important tasks.
Background programs. One of the most common reasons for a slow computer are programs running in the background. Remove or disable any TSRs and startup programs that automatically start each time the computer boots. Tip: To see what programs are running in the background and how much memory and CPU they are using, open Task Manager.