xp pro, new clean install from xp home

I installed xp pro from a reinstallation cd with sp3 oem microsoft. everything seams to work fine, loaded all my programs data, music even a ms windows
media player 11 and webroot. the computer is a HP a705w new hardware includes: sata 160gb hd/bridge, 2 pc2700 memeory 1gb ea. cd-rw dvd rw,again all works fine. ISSUE: video streaming, yutube etc. has intermitten freezing.
I updated the , Intel extreme chipset, didn’t help matters. the computer had xp home os installed on it I formatted and did a clean install of the oem xp-pro.
does anyone know where my issues lie, or what the problem might be. Did I
forget something or something I didn’t do?? could use some help here..

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