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I have no sound from my Acer 7720 computer, the mute is NOT turned on.

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  • Dan
    Dan May 11, 2010

    did your sound ever work?
    did you recently move your speakers or your pc?

    Check the plug connections to make sure it's in the correct port, that is a very common mistake.


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My acer aspire 7720 wont come on. i tried it without the battery just the charger but nothing. i plug the charger with the battery and it charges the battery but wont turn on.


It sounds as though you have a problem with the power button itself, this is on a small cicuit board beneath the top panel where the button is situated, these boards are not too expensive and eay to change providing you are competant with a screwdriver. If not I would recommend that you get a technician to take a look.

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Sounds like overheating to me, due to the increased heat from the video card. Turn the computer off, remove the bottom cover, blow air from a compressed air can, check the fan(s) can move easily, re-install the cover and restart.
BEFORE you play any games, I suggest you install CPUID Hardware Monitor (it's free).

http://www.cpuid.com/hwmonitor.php

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In most cases I have found that this problem stems from a bad charger not delivering the proper amount of voltage. Therefore the battery doesn't ever really get a full charge even though the power indicator may say it does. I would get a multi-meter and check the voltage at the charger tip and see if the power is fluctuating. Be careful regardless, a bad power unit may spike and terminate your motherboard.

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2 Answers

No sound on acer laptop


Try to recheck, device manager, click on sound, video,game controller,no (!) marks? try to disable then enable the device,update driver or uninstall and install device,or look for settings, enable speakers...or the worst thing is the phone jack is at fault.That help?

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1 Answer

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Right-click My Computer and select Properties. Click the hardware tab and click Device Manager button. Find the touchpad on the list, right-click and select Disable.
Just plug in a USB mouse.

Aug 25, 2009 | Computers & Internet

1 Answer

Acer aspire 7720 start up problems


You need to try to isolate the problem. Try connecting an external monitor to your laptop. Press function screen keys. If you have a picture on your external monitor then you have a video problem - most likely an inverter, although you may need a new screen, unlikely but possible.

If you have no picture then you have a system problem. Disconnect the battery and AC adapter. Remove the memory and reseat. Repower your laptop and see what happens.

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