laptops operate off of direct current (DC) energy. Standard household jacks, and almost all businesses in the US make use of alternating (AC) current. This means that all PCs need a special adapter (power supply) that will temporarily store a charge from the AC current to provide an even flow of energy to the DC input jack. These power supplies are composed of a multi-wire cord connecting to an AC/DC adapter, which then has a single direct-current cord that leads to the laptops DC input jack. If your laptop has trouble charging, or the light on your AC/DC adapter does not turn on, it has to be replaced.
Use the Internet to select the proper AC adapter for your notebook. And you can find a wide variety of brand laptop AC adapters here at Hootoo.com.
Secondly, Use the information you get from the Internet search to buy the proper replacement power supply. The best deals are typically online or direct from the manufacturers, but it is more convenient to go to a retail store to get a replacement part immediately.
Disconnect your old power supply from the laptop. This includes the entire power cable and AC/DC adapter. You may be able to reuse the cords of your old unit, such as if they are longer.
Assemble the new power supply that you purchased earlier. The AC cord connects to the AC/DC adapter, which connects to the DC cord, which finally connects to the laptop.
Check the light on the AC/DC adapter is lit. This indicates that the power supply is receiving power. You should also check your Windows desktop in the lower right hand toolbar for a power charging icon; it will look like a battery with a lightning bolt flashing on it.
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