The PC power supply is probably the most failure-prone item in a personal computer. It heats and cools each time it is used and receives the first in-rush of AC current when the PC is switched on. Typically, a stalled cooling fan is a predictor of...

If there is any one component that is absolutely vital to the operation of a computer, it is the power supply. Without it, a computer is just an inert box full of plastic and metal. The power supply converts the alternating current (AC) line from...

In conjunction with the United States Consumer Product Safety Commission (CPSC), Dell and Apple Computer announced large recalls of laptop batteries in the summer of 2006, followed by Toshiba and Lenovo. Sony manufactured all of the recalled...

Smartphones present a slightly different unlocking scenario. They're essentially handheld mobile computers. Locking and unlocking them is a more involved process than the simple linking of serial numbers and account numbers seen in regular cell...

Chances are, your cell phone is tethered to one particular service provider. If you try to leave that company, your phone won't work. It's locked. If you travel to another country and try to use another company's cell phone service on your old...