simply just uninstal the nvidia drivers and then download the latest amd drivers from their website. the drivers are part of the nvidia experience software so simply uninstalling that from the add or remove software page.
you only need to worry about fully removing the nvidia drivers using aftermarket cleaners if you run into driver issues with the new card.
My Computer
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Built by badgers!!!
OS
Windows 7 Ultimate x64, & Mac OS X 10.9.2
CPU
Intel Core i5 2500k
Motherboard
Asus P8z68 LE
Memory
Corsair Vengence 8gb 1866mhz
Graphics Card(s)
Nvidia GTX 770 OC
Monitor(s) Displays
2x ASUS LED 22" IPS
Screen Resolution
3840x1080
Hard Drives
240GB Crucial M500 SSD
120gb Corsair Force 3 SSD
1TB Western Digital
PSU
Corsair HX650w Modular
Case
Corsair Air 540
Cooling
Corsair H60 Push/Pull
Keyboard
Corsair K70/ Logitech G27 wheel
Mouse
Saitek R.A.T 9
Internet Speed
Too slow!
Other Info
AMD fusion E350N Home server-Windows Home Server 2011 (also made by badgers!)
2011 Macbook 2.4ghz Core2Duo, 4gb ddr3, 120gb Ocz Vertex SSD
That doesn't work if you're looking to remove drivers, I've uninstalled Experience quite a few times when it's glitched out and it leaves my drivers intact.
My Computer
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom Build
OS
W7 Pro x64 SP1 | W10 Pro IP x64 | W8.1 Pro x64 VM | Linux Mint VM
yeah I know, but most of the time its not necessary to remove drivers. I have both nvidia and amd drivers on my gaming rig and test bench, I can chop and change cards at will with no ill effects.
My Computer
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Built by badgers!!!
OS
Windows 7 Ultimate x64, & Mac OS X 10.9.2
CPU
Intel Core i5 2500k
Motherboard
Asus P8z68 LE
Memory
Corsair Vengence 8gb 1866mhz
Graphics Card(s)
Nvidia GTX 770 OC
Monitor(s) Displays
2x ASUS LED 22" IPS
Screen Resolution
3840x1080
Hard Drives
240GB Crucial M500 SSD
120gb Corsair Force 3 SSD
1TB Western Digital
PSU
Corsair HX650w Modular
Case
Corsair Air 540
Cooling
Corsair H60 Push/Pull
Keyboard
Corsair K70/ Logitech G27 wheel
Mouse
Saitek R.A.T 9
Internet Speed
Too slow!
Other Info
AMD fusion E350N Home server-Windows Home Server 2011 (also made by badgers!)
2011 Macbook 2.4ghz Core2Duo, 4gb ddr3, 120gb Ocz Vertex SSD
I would go before in Bios and see which is the primary graphics setting. Then if one is set i'll set back all the settings for the graphics to "auto" also check if PCI-e setting is set to "auto".
Then i'll reboot for it takes effect, turn off, unplug PC power wire, unmount the old graphics card, plug the DVI cable or what you choosed onto the motherboard as primary monitor.
Start
Uninstall all drivers and leftover (try to uninstall also in "Device Manager" the old one), turn off, plug your new graphics....install your drivers
My Computer
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom Build
OS
Windows 7 Professional SP1 - x64 [Non-UEFI Boot]
CPU
Ivy Bridge Core i5 3570K (Delidded)
Motherboard
Asus P8Z77-V LE PLUS
Memory
G.Skill "Ares" DDR3 PC3-12800 - 1600MHz (16Gb)
Graphics Card(s)
Asus Dual-RX480-O4G
Sound Card
Creative Sound Blaster Z w/5.1 sound system
Monitor(s) Displays
Asus IPS 23"
Screen Resolution
16/9
Hard Drives
Internal:
500Go Sata 6Gb/s (x2)
500Go Sata 3Gb/s (x2)
SSD 60Go Sata 6Gb/s
PSU
In Win C 900W Series 80+ Platinum
Case
Thermaltake Chaser A71
Cooling
Custom Water Cooling Loop
Keyboard
Cooler Master QuickFire XTi
Mouse
Razer Imperator 2012 (4G)
Antivirus
MSE
Browser
IE 11.0.xxx Rtm
Other Info
"Raid0" with Intel Smart Response Technology (HDD/SSD)
Ok thanks for your advice. I have left old drivers with new drivers before, surprisingly they didn't conflict to bad other than a constant nag screen saying that catalyst control center didn't support my nvidea card. However i dont thing i will want all that with my new card so i will simply uninstall drivers and run 7870 unless some games wont work with it.
Well having a new card will be nice in my rig. It has been on my improve list FOREVER. Next on the list will be a nice SSD. Sadly money never seems to grow fast enough on my money tree.
My Computer
Computer type
PC/Desktop
Computer Manufacturer/Model Number
self build
OS
7 home premium 64 bit
CPU
AMD Phenom II X6 1055T
Motherboard
Asus M4A785TD-M EVO
Memory
DDR3 1333 6144 MBytes each modual 2048 mb
Graphics Card(s)
Power Color ATI R9 270x bluescreen edition
Sound Card
s/pdif part of my motherboard
Monitor(s) Displays
It is a 42" lcd tv :D
Screen Resolution
1920 X 1080
Hard Drives
Samsung 120gb SSD (EVO 840)
Hitachi 500gb 3gb\s sata hard drive, slow boring but gets the job done
PSU
Orion 585w psu Model# HP585D (updated to EVGA 600W)
Case
A shoebox
Cooling
Box fan....
Keyboard
I telepathically convay what I want said.
Mouse
Cat
Internet Speed
Loading...
Antivirus
A facial mask
Browser
Firefail, Internet Exploder
Other Info
I love my gaming rig, FreeCell and Solitaire never looked so good.
All the drivers and software for the nvidia card should show up in Add/Remove Programs in the Control Panel, remove everything from there. Then use the registry cleaner in Ccleaner to cleanup any leftovers, but there shouldn`t be anything leftover from nVidia.