Solved Laptop screen darkens and lightens intermittently

June 5, 2012 at 13:58:28
Specs: Vista home

Anyone know why an Acer Aspire 4730z laptop screen would darken and lighten back up intermittently with any rhyme or reason? Thanks for any help.

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✔ Best Answer
June 11, 2012 at 13:44:10

SOLVED...I updated the driver (which I thought I had already done) and now it works perfectly. Thanks anyway to the people that tried to help. I love this site.


#1
June 5, 2012 at 15:12:39

The ambient light sensor could be on the fritz or sensing when you move your hand between it and the the light source in the room. Go into the BIOS and see if there is an option to turn it off. There may also be a function key that will turn it off. On HP laptops it's the Function & F11 keys.

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#2
June 5, 2012 at 20:28:07

No, There is no setting in BIOS, but it was set up in the control panelto to use use less brightness while using the battery. I set this to 100% but I still have the same problem. Anything else anyone can think of? Thanks

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#3
June 5, 2012 at 21:05:09

Try connecting an external monitor to see if you have the same problem with that display.

See response 3:
http://www.computing.net/answers/ha...


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#4
June 5, 2012 at 22:17:26

Well I have an update. I can brighten the screen back to normal by pressing fn and the left arrow button, and it will stay that way until I restart, but then it goes back to dim. Any ideas guys?

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#5
June 6, 2012 at 07:13:11

Watch your charge light (if you have one) this is usually caused by poor power cord connection, bad power plug, or bad battery. When the input voltage (power cord) gets below a particular voltage the screen goes into battery mode, (dims). This is a regular cause.
Wiggle the plug/cord or just unplug the power cord. If the power cord/plug is loose and wiggles a lot, then the plug in the computer needs repaired/replaced. I can not remote in and fix that one.

The Computer Dr
Chris Robertson


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#6
June 11, 2012 at 13:44:10
✔ Best Answer

SOLVED...I updated the driver (which I thought I had already done) and now it works perfectly. Thanks anyway to the people that tried to help. I love this site.

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#7
June 12, 2012 at 15:04:28

Thanks for the thanks.

We're glad to hear you solved your problem, BUT....

...you have told us NOTHING that would be of help to someone else if they have this same problem and they find this topic in the future.

Updated the driver for what ?

If you installed just Vista from scratch, which you have NOT mentioned, you have to install all the drivers for your specific model after Setup has finished.

If you still have the original brand name software installation, whatever driver that worked before should still work and would not require updating, unless it had bugs and the original driver never worked properly, or unless you used some program such as an anti-malware program and that program removed something but shouldn't have, or, a lot less likely, unless the data for it got corrupted some other way. .


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