The taskbar and start menu backgroung colour has changed to gray.Window
boarders are also gray. Exhausted all avenues. Can you help?
Using the XP theme? Check Display properties> Appearance. Blue is the
default setting. Silver (gray) and Green are the alternate selections.
If you've ended up with mixed colors within a them, you can use various
sections of Display> Appearance and Appearance> Advanced to change some
items to your color preferences. Or you can use Display> Themes and reset
to the original "Windows Classic" or "Windows XP" theme settings.
If on the other hand, you've completely lost the Windows XP theme and the
system reverted to Windows classic (which is heavily gray with colored
accents), check Display properties> Settings. Is color depth set to 16 or
32 bit? If hardware supports it, bump it up to 32bit.
Another place to check is under System Properties> Advanced> Performance>
Settings: If the check mark was moved to "best performance" the system uses
Windows Classic theme. If set for "best appearance," Windows XP theme. "Let
Windows choose" can end up with either theme - results depend on various
factors related to the hardware and drivers currently installed. The
default for this setting is "let windows choose."