A Latitude E6410 screen goes blank on boot just after showing the Windows Logo. If I connect it to an external monitor, I see it working normally. It just doesn't show on the laptop. Things I've tried:
1. Cycling FN-F8 external display options
2. Display Properties - set it to no external monitors
3. Re-installed the Intel video driver
In Safe Mode it does display on the laptop screen.
Some Windows Updates were installed yesterday. I un-installed them just to see if that made a difference, but no.
I could not use System Restore to an earlier time because someone had turned it off.
Any suggestions? Thank you!