Also check your manufacturer's site they may have updated drivers.

"Alfred Kaufmann" <al.kaufmann@shaw.ca> wrote in message
news:eqiuFJ6WIHA.748@TK2MSFTNGP04.phx.gbl...
> The windows experience rating for my machine is 1.0! It is being dragged
> down by my video card, a Sapphire X1950 Pro with 512MB. The graphics and
> gaming subscore is 1.0. I thought it might be problems with this video
> card and I pulled it out and installed an ATI Radeon 850XL with 256MB -
> same score. I tried the ATI latest drivers and earlier drivers, no
> change.
>
> Everything seems to be working fine. The only thing I can see is an
> exclamation mark, "! New hardware detected, your Windows Experience Index
> needs to be refreshed" No matter how many time I refresh this index, I
> keep getting this message.
>
> This is obviously a problem with Vista and not with the video card. Is
> there a way to correct this problem?
>
> Al
>