Windows 7: Looks like XP?

Just had a thought, it is not permissable to upgrade from XP to Win 7. Did you upgrade or do a clean install? If you did not have to reinstall your programs, you did an upgrade.

Windows Update? It possibly upgraded the video drivers which reset the WEI score. Re-run the WEI.

(WIN+Pause/Break and see if it needs to be updated)

Xp can go to Windows 7, but i went from vista and all updates are installed. Also what about uninstalling McAfee? But yes, i did an upgrade.

I deleted some Temp files, could that be why? thats all i deleted.

Go into WIndows Update>View Update History>Installed Updates and remove the updates which were delivered when the problem happened. Restart.

Was there a display driver listed?

If so and uninstalling the update didn't help, you can then look in Device Manager, click Display Driver>Update tab>Roll back driver.

Next, troubleshoot Aero to recover Aero theme: Control Panel>Troubleshooting>appearance.

MacAfee is considered by most tech enthusiasts to be a bloatware infection. Consider lean mean AV solutions like free Avast or MSE.

Did you try in different User account ???

Ya, its still the same thing, I am trying to uninstall the updates, but I don' know if thats it....could it be becuase i deleted temp folders?

Try this one:
1. Right click on your computer
2. Go to properties
3. On top left "advanced Settings"
4. go to the Tab "Advanced"
5. under performance section click "Settings"
6. Choose Adjust for best Appearence
Click ok and ok..

Now check Personalization menu, if Aero can be enabled.
Hope it helps

That is the first thing I tried, but nope it does not work.

So testing to see if changing a theme by downloading one would work, it says "This desktop can't use this theme"