Im trying to install a gt240 pny nvidia graphics card to my packard bell i extreme. the disk supplied doesnt do anything, have downloasded the drivers from nvidia site but nothing seems to be happening. please help

Ok, so when you put the card , even at start you can't see nothing or just at windows start ?

I currently have installed is Ati Radeon HD2400 AGP 256MB graphics card and im looking to upgrade it to this Sapphire Radeon HD3650 512MB AGP Graphics Card will it risk my computer to overheat, or is my computer not good enough to run such graphics card

The fan is probably stuck possibly because of dust or the fan is broken, you can purchase a cheap heatsink / fan from a retailer, or actually it may be easier and cheaper to just purchase a new videocard, they cost a little bit more than a fan. If you don't need anything better than a GT240.

I'm not sure what your question is but, you will get a picture without software however, video and audio may not match up and system will probably crash alot, requiring manual shutdown and restart. If you have an installation cd, this is teh best place to start getting your drivers and bells and whistles that come with your card(utilities) your graphics driver can then be upgraded through Nvidia. If your are having installation problems there could be a couple of reasons for this. If you had prior Nvidia software and did not uninstall it that could give you a problem, If you tried to update your graphics driver without uninstalling the prior software first, this causes problems.
http://www3.pny.com/support/support_landing_subcat.aspx?SectionID=1090&RootSectionID=1061&TypeID=5
This is Pny's download site. The graphics drivers for Win XP 64 bit are available.
What I recommend is, goto programs and features and see if your PNY/Nvidia software is there. If your not happy with drivers, uninstall them. If they are not there run your cd, make sure download is finished, then restart system. Check in programs and features now and see if your software is there. If you do not have the installation cd then download form PNY. Any further graphics upgrades I, would then get from Nvidia.
http://www.nvidia.com/Download/index.aspx?lang=en-us
If you have a question or if I'm barking up the wrong tree, let me know at "add a comment".
PS-I can't find what power rating is required for your card but I would guess minimum allowable would be 400w and, power cord must be hooked up for card to work.
Dave

This Graphics card needs a system with at least a 450Watt power supply. As your cousin upgraded to a newer card, we can therefore assume that this card works and the problem lies with your computer. The power supply being the most obvious. I recommend a Cooler Mater Extreme Power Plus 460W or greater.

its a common problem....nvidia graphic chip has failed due to the unleaded solder failing

Take this link to Nvidia and select Gforce series 6 and select your operating system from the list and get your free drivers.

http://www.nvidia.com/Download/index.aspx?lang=en-us

I don't, but Nvidia does at http://www.nvidia.com/Download/index.aspx
you have a geforce 5 fx.select your os and language. this will give you the unified driver that works on all Nvidia chipsets. be advised the card you bought was private labled to PNY so the automated driver search will probably just tell you you don't have any Nvidia cards installed.

DRIVERS CAME CORUPTED OR RIGHT CLICK MOUSE GO TO PERSONALIZATION, DISPLAY SETTINGS MAKE SURE IT IS 16BIT OR 32BIT NOT 4 OR 8 BIT

GOTO ADVANCE SETTING TO TROUBLESHOOTING IF THEY HAVE IT NOT EXIT ALL PROGRAM AND REBOOT SYSTEM

ROD

Hi, if you can not identify the size from info on the card then you need to run a diagnostic program such as pc32.
You can obtain this on Hirens Boot disk.
Google TSbay Warez and register here as a member [free membership] on this site you will find most Windows apps and Hirens boot disk is there.
Goodluck, mistyman