My laptop is no longer loading the internet correctly, how do I fix it?

[tallpollution983]

Okay so a couple of days ago I was listening to music on youtube and something just... stopped working. I was about to go to work so I didn't pay much attention to it.

Basically what is happening now is I can load any page I want, no problem but when it comes to playing a video of any kind... not gonna happen. Sometimes it works, I get to watch like 20 seconds before the screen just goes black or doesn't load any more. So it does load a little bit.

It's not the internet connection because my friends laptop works perfectly fine. It's not my wireless because I bought a wire and plugged it into the router. I've never had this problem before and it's really strange because it loads any and all pages fine, but the vids don't work. I don't think it's my video card either because it will load a little bit before then deciding, actually, no.

Help?