Although not a high powered card by any means, the 6200 does require a bit more power than the MX 400(another good old card). It could be that since the system is so old, either the power supply or motherboard is having trouble keeping up. Basically the power supply powers the motherboard, which in turn powers the video card. As such components age, they struggle to do their jobs.
It may be just time to save up for a newer computer. Even a newer used one would surely be an improvement.
Yeah, I was also thinking that. Well, the Geforce2 will have to do for now i guess, I cant wait till i build a new PC Thanks for your help