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Hellow Dear, My acer aspire 4935 laptop is not charging when plugged in & power button flushes along with charging LED near touchpad.Sometimes The horizontal led that lights when plugged in disappears & sometimes light up alongwith power button LED as normal but battery not charges. I couldnot start the laptop without battery with only AC power plugged in.Please help whether my adapter or battery/Battery DC Jack or Laptop DC input port Defective. Thanks.

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First, you need to make sure your power adapter is providing enough power to both run the laptop & charge the battery. A very good way to do this is to compare your laptop voltage & ampere requirements (written on a sticker on the bottom of the laptop) with the voltage & ampere ratings of the power adapter. Voltages should be the same, or the power adapter's voltage about up to 0.5 volts more than the laptop's voltage rating. Amperage of the power adapter should be at least equal to or greater than the laptop's rating. It should never be less than the laptop's rating, or else the power adapter will be providing insufficient amperes to charge the battery. Of course, the power adapter's nominal amperage might be ok, but it degraded on usage. You can verify this by testing using a good or new power adapter.
If the battery did not charge using the new power adapter, take the battery off the laptop, & using a dry tooth brush, scrub in between the fins of the battery connector on the motherboard & on the battery it self, then put the battery back into the laptop & try again.
If this still did not resolve the problem, then the battery itself could be bad. Try it on another laptop, or try a good or new battery in your laptop.
If this did not work, there might be a possibility that the charging circuitry on the laptop's motherboard is defective & needs servicing. In order to do this, the laptop needs to be disassembled & the motherboard checked for defective/burned out components in the area near the DC jack. Any defective/burned out components found should be replaced, or you might need to replace the laptop's motherboard altogether.

Posted on Sep 15, 2010

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Try the solution here:

http://honeysha-arisha.blogspot.com/2012/05/****-acer.html

Posted on Jun 01, 2012

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(Download)
You need Winrar to extract it

Here all drivers, they should work as well on 4930:

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Chipset Intel
Acer Aspire 4935 4935G Windows XP Driver
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Modem Conexant
Acer Aspire 4935 4935G Windows XP Driver
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Webcam Suyin Crystal Eye
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Webcam Bison Crystal Eye
Acer Aspire 4935 4935G Windows XP Driver
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WLAN Broadcom
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LAN Atheros AR8121/AR8113/AR8114 Gigabit/Fast Ethernet Controller
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Launch Manager
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Card Reader
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VGA NVIDIA
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(Download)

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