Hi folks, I'm new to this and thought I'd buy a new graphics card as I can't seem to play many games with my PC as is. However, I've tried installing it but my PC won't boot. Once I remove it, the PC's fine again. I've got the BIOS setting set so that PCI-E is my primary graphics interface but to no avail. My PC has a Intelgraphics Media Accelerator 900 (SMA-224mb) and although the instruction manual for the GeForce says remove the device in the device manager, I'm having trouble doing this as there's 2 entries in there and I'm reluctant to remove them both as how would I get them back again if needed. Any advice (in simple language) would be really appreciated. Steve.