Video lag/not playing

[steeper]

Not one stream or video file will play!!
I get a picture of the video but it wont play, but I do get sound 

When I play the video like on YouTube, my computer still runs without lag, slows a little, but i can exit or push the previous page button to get out, so I'm not sure if its CPU..


I have IE, Firefox, and Chrome, but I'm not sure if its internet cause I downloaded videos to see; played them on vlc player; same ****ing problem.. 

My computer is old but.... Pentium III 930MHz, 512 ram    .. its a temporary free computer til I get my new one next month or so... but this video problem is frustrating me... my computer runs smoothly, I reinstalled windows last week to wipe everything and start fresh. Smart defraged, used tuneUp, spyware doctor, antivir, updated every driver, installed newest flash player.. nothing wrong with it in those cases. my only guess is the video card, but I can imagine a video card so crappy?

[Mulreay]

Can you post your full specs please 

[2x3i5x]

I'd like to know what kind of video card you have in your machine. My dad's old pentium 3 machine with 750mhz processor, and 512mb ram has a Nvidia Geforce 5200FX card and he can watch online videos on his computer. He says a better computer would be nice, but the pentium 3 is tolerable.

Try turning off the hardware acceleration for your graphics card and give that a shot.