Dell Inspiron 7520 15R SE Screen Brightness Issue

Question

My laptop's screen no longer functions beyond a very dim setting. To see the screen is incredibly hard and requires much eye strain. The Fn F4/F5 keys do nothing to alter the brightness and neither does manually sliding the brightness bar in control panel and the brightness slider within the Intel video settings app. If I plug in an HDTV using the HDMI slot then the TV screen display is clear and functions normally. Around the time my laptop screen stopped working correctly I also started to get 'Appcrashes' from basic programs such as firefox, itunes, skype etc. Uninstalling and reinstalling my video drivers seemed to resolve the software crashes but had no impact on the screen's brightness. Could a hardware fault cause drivers to play up? Interestingly, Installing the program  'Desktop Lighter' which over-rides my basic brightness function does boost both the plugged in TV and the laptop screen's brightness, however still not adequately to be able to clearly view the laptop screen.  I've also tried updating QuickFix and Bios and altering my battery settings, but to no avail. Any help would be much appreciated, although I suspect this is probably a hardware fault and I'll have to ring dell up about it for parts. (Laptop is still in warranty.) Thanks!

stevii · Accepted Answer

Remove LogMeIn and its mirror driver in devices. Also remvove the DPMS monitor.

kirkd · Answer

Sounds slike the screen back-light is failing.

Brettmeister · Answer

I got a response from Dell that said:

Hi Brettmeister,

Welcome to the Community.

Please check the LCD screen brightness in the System Setup screen. To go to this screen, you need to continously tap F2 as soon as you power on the system, till you see the System Setup screen come up.

Kindly check and let us know if you notice any difference in the screen brightness so that we are able to assist you better.

Awaiting your response.

Thanks and regards,

Prateek_K

#iworkfordell

But the link from the email took me to a 'page not found' page instead. Odd.

Anyway, thanks for the quick response, Prateek_K.

The system setup screen was also very dim and nearly impossible to make out, Fn f5 also did nothing. Probably a hardware issue, then?

Thanks again :)

LinuxTom73 · Answer

Thanks. That worked for me. The brightness is good on the Linux install.

Locked Topics – Laptops General

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