Hello and welcome to Techspot.
Your problem is caused by you not having enough ram in your system.
I assume that by Windows xp sp3 you in fact mean sp2?
Windows XP is fairly memory hungry, add to that your onboard shared graphics, which will be 64mb I assume. This gives you 256mb less the 64mb shared graphics = 192mb of ram.
Get some more ram at least 512mb this should improve things quite a bit.
You might also want to consider upgrading to a separate graphics card. Don`t ask me to recommend a graphics card, as I don`t really play games lol. There are lots of guys on these forums that could give you good recommendations for a graphics upgrade.
Regards Howard :wave: :wave: