[I need help] Graph card, weirdass pc

[ArEND]

Well guys, I need your help with something. I just bought a 1 gb graph card, and well, it fits perfectly, but when I insert it, my pc starts making a pretty anoying noise. However, that aint the weirdest part. When I use it, my mouse starts to act weird, I cant move it as smoothly as I used to. Its pretty awfull.

And now, the most terrible part: When I uninstalled my previous graph card driver etc , my connection port suddenly stopped working. The cable is inserted etcetera, so how could this be? Has it something to do with the power? The graph-card needs at least 400 watt and my pc gives only 350. That could be the solution. But however, iff I would switch to a new a new powerthing (whatever its called) but, would it help to get my connection working again? Aint it burned or w/e?

Thanks in advance guys!

[PogoThePrez]

First I would go back to your old vid card pronto. If you keep using the new one with your current psu it could fry your whole comp. Then pick out a 6 to 700 watt power supply. What gpu is it btw? Don't go out and buy anything yet until you get everything sorted out first.

[ArEND]

Allright, I did that. By the way, by one way or another my connection port suddenly started working again so i could access the network.

By GPU you mean this: CPU Type AMD Athlon 64, 1800 MHz (9 x 200) 3000+ (Its terrible, I know, but i can play with it
Well, i'd probably just buy another power supply. I'll get some funds free, hehehe.

[PogoThePrez]

No I mean your graphics card.