iam sid, i hv a Dell inspiron N5110 laptop.
When i go to the 'Performance Information and Tools' panel in the control panel, there is a message which reads 'Your Windows Experience index needs to be refreshed' . I click on the 'Refresh now' button . It starts checking 'Direct 3D Aero Assessment and Batch Assessment and stuff...' It rus fine, but then suddeny a message pops up and says 'The Windows Experience Index for your system could not be computed.'
Reason~'Could not measure video playback performance'
I re-ran the assessment several times but the same result comes back.