Hello everybody, thanks for your interest.
I am close to giving up. I downloaded the driver and then when I tried to install it, it said it was not suitable for my computer. So I went back to the Intel site and let them do a graphics chip detection thing. The result was that my driver is a customised version and I should contact Toshiba for help. I have been back to the Toshiba driver page. I wish they had an automated detection process. Maybe I downloaded the wrong one from them. I mean right for my computer, but not even a display driver. But it is called display. Then I downloaded a 'chipset'. That didn't help. I have got a more detailed error report this time:
Open up new direct x game
Double click on layout
Nothing happens, but there is a cross hair cursor on screen
I get bored of nothing happening and click on the screen
Picture Editor opens up and then BANG, it's all over red rover. Colors go to 4 bit, resolution 640 x 480
Message comes up saying
Windows - Display Driver Stopped Responding
The ialmrnt5 display driver has stopped working normally. Save your work and reboot the system to restore full display functionality. The next time you reboot the machine a dialog will be displayed giving you a chance to upload date about this failure to Microsoft.
Then I can't change things back again, or if display properties does let me move the slider along to change resolution, and say ok, the screen goes black and eventually I press the off button. Then when I start up I get all sorts of bother trying to fix things up again.
I see from a quick search that others have had a problem with the ialmrnt5 display driver. My brain has had enough for now and I am tired of restarting my computer over and over. I will look into it when I can face it. But on the quick look I've had, it seems to always suggest updating drivers to sort it out.