On my daughter's computer, while she was using Word, the screen changed so that everything is very big. Additionally, there are yellow vertical lines about a half centimeter apart.
I have tried Settings and the results are:
Screen resolution 640x 480 pixels
Colour quality lowest
I tried to change the screen resolution and colour quality but, when OK to save options, nothing happens and the settings have gone back to where they were.
I tried troubleshoot in the Settings screen and got the message:
Windows cannot open Help and Support because system service is not running. To fix this problem start the service named "Help and Support"
Where is this service?
I tried Advanced. It tells me that DPI setting is normal size 96Dpi
The computer was built in a shop & has no manufacturer's name.
It is running XP SP3