Just about any PC that can run XP will need a power supply larger than 250...
There is a link I can get for you to calculate the size of the power supply that you need...
Many of us run 400 and 500 watt power supplies...
I dont put in anything under 350...
Thong_Ispector
Practically a Master Poster
638 posts since Nov 2004
Reputation Points: 16
Solved Threads: 19
Here it is... http://www.jscustompcs.com/power_supply/
If you dont have enough of a power supply, NONE of your components will work the way they were designed...
This is a quick and easy way to see if your power supply is less than adequate...
Thong_Ispector
Practically a Master Poster
638 posts since Nov 2004
Reputation Points: 16
Solved Threads: 19