Did i fry my graphics/Video card?

Hello, I introduce you to my problem, enjoy...
I left the computer turned on, downloading a torrent, but, the power got out by a storm and when i turned it on again it booted using a resolution of 800x600 (i was using 1360x768) I didn´t care and switched the resoution back up. (I have a LCD screen)

Then again, I realized i wasn´t using Aero i tried to use it then it won´t show up like before (It only has the regular nonAero theme).

And also, that I play games that are a bit intensive for my CPU. They won´t start, they say that Ddraw.dll it has an error or not available for windows.

It also seems that DirectX is affected because I can´t run dxdiag.exe.

And I want to know what can I do to fix it, and if it is because i fried something I want to know how to open up the CPU

Help! I want my games back!

(games affected: CoD´s, Minecraft, Doom 3, Portal 2, Assasins Creed 1 & 2)

Specifications of My Computer

OS: Windows 7
RAM: 3.5
Proccesor: i3 icore 3.10 GHz
Video Card: Intel Graphics HD 3000