I have a acer aspire 7720 notebook laptop, the computer runs perfect off the battery, when battery gets low i plug in the ac adapter and it charges the battery just fine. but when i try to run the computer on ac power the screen is almost black i can see just faintly so i use a flashligt so i could fine my pointer and shut it down normally. the ac adapter has been throughly checked for proper voltage and 4.74 amp. so i know the charger is working fine. it just seems like the ac adapter does not have enough power to power up completly. now i did the unplug battery and ac adapter and used the power button down for a bit and one time it worked and im now back to the same problem.. i need help before it makes to the filled bathtub... thankyou
Problem in mother board power supply unit check any dry soldering
SOURCE: My Acer Aspire 5720 laptop won't charge while it's running
Hello there:
try removing the battery from the computer and turning on the computer to see if the power cord works correctly if it does inspect the battery and clean the terminals on the battery and computer and put the battery back in while it is still on now you should see the battery show up on the taskbar if not right click anywhere on the desktop and go to properties and than go to than go to screensaver than look towards the bottom and you will see power click on it and you should see the options for the battery ok sorry this was so long but i needed to explain it in full
please dont forget to rate this
best regards mike
(usn retired)
SOURCE: I have Acer Aspire 3680-2022
Hello.
The most common reasons for power issues are the battery, power jack and power adapter/cord.
Power off and remove the battery. If the laptop powers on with just the adapter connected, your battery is faulty.
If you move/wiggle the power adapter at the point where it connects to the laptop, and the power goes off and on, the power jack is the problem.
The power jack is inside the laptop and either needs soldering or replacement. If a power jack problem, it should be addressed by someone knowledgeable.
If no change, the power adapter is probably faulty and needs replacement.
Hope this helps.
Adapter: see if you can get a duplicate adapter from someone and try theirs. Your PS has a fault which could lead to damage to the Video portion and down the road, burn out the CPU.
1. Unplug AC adapter. Shutdown
2. Remove battery, Connect AC Adapter
3. Start windows7. Remove Microsoft ACPI-Compliant Control Method Battery under device manager , battery
4. Shutdown, Remove AC Adapter, Install battery, Reattach AC Adapter.
5. Power up -
Now Plugged in and Charging.
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