A faulty battery or AC adapter can cause power management and charging problems, resulting in sudden power loss. Laptop batteries tend to only last between one and three years, after which their ability to accept and hold a charge decreases. A faulty adapter can prevent the proper amount of electricity from reaching the laptop. Take turns running the laptop on one power supply, then the other, and watch for sudden shutdowns. If the laptop powers down without cause, the power supply you were using may be faulty and will need replacing.
Your Acer TravelMate 3000 will experience frequent shutdowns for numerous reasons, some benign and others more worrisome. Troubleshooting the cause of these shutdowns involves listening and watching for clues before the power down occurs, as well as checking for the most common causes. Solving and preventing this power issue may involve a thorough cleaning of your machine, or require a visit to a repair shop for diagnosis and correction.
Broken Adapter Jack
If your battery and adapter seem in proper working order, check the adapter jack the cord plugs into on your TravelMate. These jacks are only attached to the motherboard through small solder points, which can break over time or due to rough handling. Plug the cord in and wiggle it at the laptop connection while watching the charging icon. If the icon flickers, it is alternating between sensing and not sensing the presence of the cord. This means your adapter jack is broken and preventing proper power supply. Repair or replace this jack yourself, or seek the help of a laptop repair shop.
A common cause of sudden, frequent shutdowns on a computer is overheating. If the internal temperature of your TravelMate climbs too high, the laptop will shut itself down to prevent damaging its delicate internal components. Use a can of compressed air to clean any accumulated dust, lint or hair from inside your TravelMate, paying close attention to the air vents located on the right side and bottom of your machine. Add a laptop cooling stand to help dissipate the generated heat and keep your system cool.
Viruses, spyware and adware all attack your system by installing themselves and running in the background. Some viruses are programmed to shut your machine down often and unexpectedly. Keep your malware software up-to-date and run a deep scan to find any unwanted intruders on your system that may be causing your shutdown issue.