I suppose there is a problem with batteries they can' t keep charge more then 20 minutes
Yeah, computer batteries though they look fancy, they just have fancy covers. If you were to open one you'd find a bunch of what look to be perfectly ordinary rechargeable batteries all soldered together in trays. Lots of them are made with AA and AAA rechargeables. Just like any rechargeable battery they are only good for about 300 cycles before they start to loose some of their capacity. Just like a cell phone battery they need to be replaced periodically usually every 2.5 to 3 years. Your computer doesn't care who made your battery and there are several much less expensive alternatives to your name brand battery. Take the model number off of your battery and google it you'll find replacement batteries for much less. Just make sure your computer is listed in the 'compatable with' listing on the site and buy from a seller with a good rating.
If it is orginal battery it is probably dead. You can buy replacements nowdays that can last 4-6 hours. I suggest NOT buying a used one. You can check ebay stores for new ones though.
Your computer is constantly trying to charge a battery that won't hold a charge, so it heats up your computer. Get a new battery and you should be fine, did the same with my toshiba works great now
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usually the CPU fan has failed if the PC shuts down.
Is the battery pack hot?
Have you tried removing it and powering up via wall charger only??
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