Youtube windows 7 help

I dont know what is this problem but I really hate whats happening on my laptop watching youtube

at first very high internet utilization buffering maybe 30 sec then back to 0% unless I play the video

I really hate this because my vid cannot buff continually buff because i need to play it again to buff +30 sec again

  Before i buff video for 10mins for a 10min video   I leave it when im eating   But now 10mins is just 30sec+ because if I will not play the video it stops buffering  

PLEASE HELP ME ON THIS PROBLEM          

http://i306.photobucket.com/albums/nn252/kenneth1020/Un...

http://i306.photobucket.com/albums/nn252/kenneth1020/Un...

i googled youtube buffering stop when not playing I dont know that there is a tutorial on how to fix it