I had posted this in the General category a few minutes ago, then saw that there is a Video category.
I have an old Latitude D520 which I have pulled out of my computer closet to give to someone in need. It booted right up and then reminded me why I stopped using it. The laptop monitor actually works fine but something in the boot-up switches it to "external screen only" mode (not monitor and screen), and thereby blanks out the laptop monitor. I have tried switching it back using Fn-F8. The switch works, but then it switches itself back to "external screen only" mode. Any ideas?
Thank you for any assistance. I have an extra screen that I could give them too, but it would be nice to have the thing still be portable.