Help needed pls

Hi All

this is a first time post so please be gental as i am no expert on PC's. My question is i recently strating having problems with my display when playing games and interne, blocky colours appered and i had to keep restatring my pc this cleared it and i would get another 30mins play. eventulally i switched my PC on day and you could hear it boot but the screen was black nothing, could'nt F2 or F12 just black.

So i decided to buy a new graphics card as that was the advice i was given, i brought a MSI GTX 560 installed it in my PC and started it up.
Now i have got some picture, the start up etc but it then goes straight into the BSOD, i have tried starting it from safe mode and all the others but still BSOD, i have also tried the Dell diagnostics express one which came back clean.

Question where do i go from here.

PC is a Dell XPS 720 i think, not sure on motherboard, but power supply says it 750 watts and i am running XP.

Please help

What was the graphics card you replaced? If it was an AMD(ATI) Radeon and you replaced it with an Nvidia card, then you are going to have troubles with the drivers.

Did you do a "clean" install of the drivers ?

When you udate your drivers with the latest one, you have somewhere along the line the choise between installing while keeping all your old settings ( i believe the first option ) and the option to do a clean install, so with deleting all the old settings. Sometimes NVidea is a bit troublesome with old settings. I hope you understand my maybe not so clear reply, i'm not that skilled in English to explain it better, maybe someone else can explain it better ?

Thanks, no i understand.
I have not installed any drivers for the new GTX 560 card as i am unable to get past the blue screen of death. So at the moment my PC will have the drivers installed for me old graphics card the 8800 GTS.

I guess these old drivers could be causing me the problem of me not being able to proceed further, whoever how can i uninstall the old drivers without loading XP.

thanks

Yeah unfotunatey dont know know anyone that has one.

Can anyone else provide any assistance