i've an old zotac geforce 210 synergy edition graphics card and i've bought a new sapphire radeon hd 7750. can anyone tell me how to remove the old nvidia card from my pc .i know how to take out and plug in the card to the pci-e slot but i don't know exactly about how to remove all its software and related drivers . should i remove them all from the controll panel ?what will happen after removing all drivers ?will my monitor stops displaying or something else? and after fully removing this card and inserting the sapphire radeon hd 7750 in pci-e slot and connecting the cable to the monitor what should i do after this ?will my pc automatically detects this graphic card or i've to install all the softwares in the cd first . is there comes any part of bios during the installation of graphic card .i don't know anything about bios and don't know how to use it ...help me