I used to play League a lot, and my dad thought i played too much, so one day I saw him go on my computer and i KNOW he did something because now whenever i click to play, a pop-up says "cannot load direct3d."

I don't know what he did, uninstalled the video/graphics card or something? I'm no computer tech, i just know he did something to the computer that won't let me play anymore I am most saddened. Please help! Early thank you

can u upload a picture of the problem? if its a .dll problem just download the file from internet and past it in system32, it should work.

start menu
type 'dxdiag'
press enter
Run as x64 if possible.
save the .txt somewhere memorable.
Upload that here (not copy pasted please).
I'll be back in an hr.

i did the dxdiag thing, but the next steps i don't know what you want me to do or how to do it, i don't know my computer stuff sorry:\

There's a button called "Save all information..." in dxdiag. Click that and stick the file somewhere internet-accessible (perhaps dropbox?) and link to it here.