Windows 7 display?

I'v seen Win7 on a lot of PC but I have one the jest does not look or act the same as all the other I'v seen. On all the other PC with Win7 when I put the mouse over the browser program's that are on the task bar it would show a small display of all web pages I have running, but on this one it only shows the URL's?
Had anyone seen this before and if so is there a way to make it work the same as the others?

Thanks

 

Just for the record, what version of windows 7 are you using? What web browser, and version?

With Internet Explorer (IE), Windows 7 will display a small image of open web pages when you hover over the IE icon on the taskbar. With other browsers, it will only show a small image of the active tab of that browser.

 

The full 'Aero' effect available in W7 is dependent upon the exact W7 version installed and the PC having a fully compatible graphics chipset; some PC's, especially netbooks and laptops, have cheaper or low power graphics chipsets which cannot fully utilise all the effects available to 'better' computers.

 

Sorry I have not reply-ed but I have not been back to that PC yet. It's my brother in-law and I will be there tomorrow. It Win7 home premium that I installed.

Thanks for all the input so far. I will try down loading a Video driver and see if that's the problem.

 

I have given up on the problem...I believe it's the hardware. How do I close this thread?