I had this issue on my Inspiron 15 7000 for most of today, and downloading optional driver updates fixed it for me. In Windows settings, navigate to Windows Update, click 'Check for updates', then 'View optional updates'. On this screen click the 'Driver updates' drop-down menu, check any you think might help, and download.
Hello, I've already had my computer serviced by Dell once since I purchased it in April 2021. I was hoping maybe someone could help me with this issue that just came up.  Two days ago font sizes in Windows changed by themselves, the text was tiny in my toolbars I could barely read it. So, not sure but I fixed it. Now my screen brightness has a mind of it's own. Yesterday it was really dim, today it is bright like the sun. I've run the tests to make sure my drivers are updated and they are, I've also run hardware scans from Dell and nothing has come up. But the F6 and F7 buttons do not work at all to adjust screen brightness and I can't find a slider tool (like some sites have mentioned) to adjust overall brightness in the settings. Anyone have any ideas? Thank you in advance
can't change brightness on Inspiron 15 7501