Why does my computer's clock lose several minutes each day?
Answer: You most likely have an old battery. If the battery inside the computer is running out of steam (or lithium, for that matter), your clock will start having problems keeping time. This usually happens after about 5 years -- it could happen sooner if you have a bad battery. You may be able to get a replacement at CompUSA or some other store like Batteries Plus, depending on your computer model.