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HP PAVILION SOMETIMES SHUT DOWN ON START UP. IT WILL NOT RUN AT ALL JUST ON BATTERY. BATTERY HAS 80% CHARGE.


Answers :

First thing I would do is clean out any dust within it. It can be disassembled on the bottom by taking out all of the screws. Then even though your fan works, it may be drawing too much power or something else is drawing too much power and is causing the computer to shut off due to a built in safety feature but first try reseating or replacing the RAM and see if it does the same thing, you could also try switching the RAM card slots. If that didn't change anything then try stripping the laptop down. Leave RAM, motherboard, and\015\012LCD (just make sure you leave the part that has the switch/power\015\012button). Power ON. if it behaves the same remove the LCD. From there\015\012you can conclude it could be the motherboard or not.
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\015\012With an open laptop check the cables that plug into the motherboard. Make sure each one is plugged in securely.
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\015\012Once the laptop is stripped down and is powering up without shutting\015\012OFF a few seconds later, put each part back one at a time. Power ON the\015\012laptop each time you put a part back. Start with the keyboard then the\015\012hard drive, the CD/DVD drive, wireless card(if any) and modem. Of course you can do it the other way around whatever is convenient for you. When it doesn't work, then that is your faulty part that is probably overdrawing current. Let me know if you have any more questions on this and how this turns out.


Benjamin
If the laptop is working fine when plug in to a power supply then it only means one thing the batter is already going bad and needs replacement already....
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