My Desktop resolution has suddenly become so large that my Icons do not all fit in. I thought I could reinstate this to the original size by altering the Screen area on the Settings tab of Display Properties but I am unable to move the Slider and it is stuck at the extreme left on Less resolution. Can anyone help please?

sounds like a driver problem, what is the make+model of your pc?
if you got a drivers disk, install the graphics driver, if not, i will find one for your system
Mike

Download and install Everest Home Edition. (Clean Freeware) Use the Report Wizard to save ALL pages, in HTML format. (You'll get links this way.)

Scroll down to the PCI / AGP Video section and post back what is listed. Or better yet, attach the report to your reply.

As a newcomer,very impressed. Speedily received good advice from Madmikejt12 and soon had my problem fixed.Mucho Grazias.