test all power and data leads that attach to your hard drive the leads from your
(motherboard to your hard drive) Sata make sure they have dust free secure connections and are not faulty make sure all leads that are attached to your drives dvd\cd have secure connections and are not faulty
even something as small as a faulty fan lead can cause you problems a computer needs all of the power and data to travel through every working device and to
have an end for a computer to be able work properly
make sure your graphics card is securely seated with no dust
click start control panel display desktop you can select a different desktop from the drop down list or a browse button where you can select different pictures this may vary depending on your operating system also you can change the settings for more or less pixels or from the drop down list pick the appropriate level of color range or troubleshoot also select advanced then general dpi normal size larger size or custom settings always click APPLY after making any changes
if you remove the graphics card to clean the socket replace it
restart the computer the found new hardware wizard should activate
hope this helps
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