dell latitude e5520 laptop - error colours distorted when log on
Over the past two weeks I have had a number of laptops which look fine when get log on screen, but the moment you log on the colours go psychedelic.
I have found fix by removing and adding the intel graphics driver but I find it strange that:
- Why isn't it effecting the log on screen if it is a graphics issue.
- There are no errors in event logs and running dell hardware diagnostics nothing is picked up.
- There are no errors showing on the driver in device manager.
- The computers that have been affected have been working for well over a year without being reimaged.
- We have well over 400 of the same laptop within the school so why hasn't affected more computers
Just a bit puzzled at the moment?