I have had this issue with two computer in the past.
I had an HP Pavilion TX1000 for a while and had the issue on the Vista OS.
Now I have an IBM Thinkpad T43 with Windows 7 32-bit installed and it has been fantastic up until just today.
I've looked through a lot of documentation on this...
ati radeon
computer troubleshooting
desktop environment
email client
gaming performance
graphics driver
hp pavilion
ibm thinkpad
input lag
minimize restore
software glitch
system performance
taskbar issues
technical support
user experience
vistaos
visual artifacts
window flickering
windows 7
windows explorer
Would somebody please tell me what the red bar is under the D drive in the attachment? This drive is not in use and contains my old Vista OS.
I am running Win7 Pro on the C drive
Thanks