Gets no power from wall or battery
Few things in life are as frustrating and infuriating as working ******* your laptop, only to see the screen go dark due to a sudden power loss. While there's a good chance your hard work and data is gone, the more concerning issue involves the cause of the sudden loss of laptop power. A suddenly dead laptop could indicate a more serious problem, or simply be due to a loose battery or power cord.
If your laptop's fan was running hard and fast right before your laptop went dead, it's possible the machine shut itself down to avoid damage from overheating. The internal electronic components of a laptop generate heat when the computer is turned on, and this heat must vent to avoid causing damage to the machine. If the air vents are clogged or blocked and the heat inside cannot dissipate, the laptop will power down without warning to prevent possible damage. To avoid this problem, ensure that your laptop's fans and air vents are clean and clear, or use a laptop cooling stand to help vent the heat.
Laptop batteries are not exempt from malfunctions, and a sudden power loss may point to a problematic battery. A loose connection may cause a surprise laptop death, as can dirty connectors. Like most other battery types, laptop batteries are not immortal and eventually lose the ability to hold a charge for long. Some laptops have sensors and circuitry to monitor the battery, and will cut power to and from it should it become too hot or exhibit too high a current. Try cleaning the connectors and reseating the battery properly to fix the problem. In the event of a loose connection, a repair technician may be your best course. For malfunctioning batteries, a new replacement battery may be the best way to prevent future power failures.
If you were using your AC adapter for power right before your laptop powered off, there may be an electrical problem somewhere along the line. The outlet you were plugged into may have short circuited, or the adapter itself may have overloaded. The connector on the back of your laptop may be loose, preventing proper connection of the adapter. A short circuit within the laptop itself may have occurred, preventing either the battery or adapter from providing power to the rest of the electronics. Work backwards to find the source of the power supply problem. Try a different electronic device in the outlet, and insert the adapter itself into a different outlet. Reinsert the various cord ends into the adapter and laptop to ensure a tight connection. If a short circuit seems the likely cause, seek the help of a professional technician for repair.
Try to ascertain what occurred right before the power loss. A physical move of the laptop may have loosened the battery or jostled the adapter cord loose. Try removing and then reseating the battery and tightening the adapter cord. A loud fan noise may indicate that the machine was on the verge of overheating. Let the machine cool completely before attempting to reboot. An unusual noise emanating from within your laptop may indicate a short circuit. A beverage spill can cause the death of an laptop if not attended to quickly, causing short circuits and power failure.
Observe standard safety procedures when dealing with electricity, and never disassemble or examine an outlet or your laptop without disconnecting all power first. If delving into your laptop to check for short circuits and loose connections, work in a clean, open area to avoid introducing any new contaminants to your laptop's vulnerable interior.
Read more: My Laptop Suddenly Has No Power ' eHow.com http://www.ehow.com/info_10023896_laptop-suddenly-power.html#ixzz1XFwtBENN
Sep 07, 2011 |