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brightness of laptop set to 0 and stuck

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M

Meziane

PCHF Member
Jul 5, 2019
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#1
Hello,
I have this Dell Latitude E6420 laptop with i5 version,
I accidentally lowered the brightness of the screen under Windows 7,
Now I do not see anything on the screen and even after rebooting, I can not see the BIOS, I could actually see it and I could try to change the BIOS brightness after 30 minutes of testing, but it did not work no, if I put an external monitor. works after I'm in Windiws but even if I change the brightness nothing happens!
HELP ME PLEASE !!!
 
#3
Sounds more like a hardware issue than a problem that is windows based. But if it is a windows issue, then I believe a system restore is in order.

www.howtogeek.com

How to Use System Restore on Windows 10 and Windows 11

Deleting Windows system folders is still a really bad idea.
www.howtogeek.com www.howtogeek.com

Edit: might as well set your bios to default as well.
www.lifewire.com

3 Easy Ways to Clear CMOS (Reset BIOS)

Here are three different ways to clear the CMOS memory on your motherboard. Clearing CMOS will reset the BIOS settings to their factory default levels.
www.lifewire.com www.lifewire.com
 
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