Vista - Youtube videos pause or stall before continuing in vista64 2009 la

Music videos pause or stall in Youtube after about 2 minutes, and then
continue after a 20second delay on HP DV6 2009 Vista64 laptop.
Using a DSL connection 2mb, 4yr old dell pc using xp plays youtube perfectly
and can download youtube music videos in seconds after the video concludes.
HP Laptop downloads at reasonable rate but not instantly like 4yr old dell pc
using xp.
HP laptop updated to latest windows updates for vista64 and latest hp laptop
updates. Unisalled and reinstalled adobe flash for no effect,
realplayer+windows mediaplayer work very well for video+sound. I scourned net
for patches/fixes/solutions, no solutions out there.
How do I get youtube to play continuously with no pausing/buffering and get
the music videos to dowload instantly when played?