Nic
I thought I'd give you an update on my position in case it is of use in sorting out somebody else. My problem was in not being able to totally remove previous drivers. When I made a mess of trying to update BIOS (part of another attempt to find a solution) I was left with no options other than to 'refresh' my computer. That has done the trick and I have had no problems since.
I find it odd that a clean install did not have the necessary effect and I can only guess that the W8 installation process searches for and uses previous drivers meaning that one is not left with only the latest driver and no residual files from previous ones.
The 'refresh' process does clear the drivers and only loads the Basic Microsoft Graphics. That enables one to download the new driver from scratch which appears to eliminate all problems. The following message appeared in a new icon on my desktop after the 'refresh':
Applications removed while refreshing your PC
| Application name | Publisher | Version | |||
| Intel(R) Processor Graphics | Intel Corporation | 9.17.10.2932 | |||
27 August 2013 10:07
Of course, if anybody else has no option but to take the 'refresh' route in W8, they should understand that all programmes/applications are lost and have to be reloaded just as in a clean install. Oddly, my personal files were retained though I would back them up anyway if I ever had to take the option again.
Thanks for your help and patience.
Oakman