Help with graphics card installation! (Upgrading from AMD integrated onboard to Nvidia dedicated)

Hi all I just bought a new pc a few weeks ago (prebuilt) and am wanting to upgrade my graphics card. After looking online I choose an EVGA GTX 1050 ti for $150. Checked my psu to make sure i had the required power and than made sure i had space in my tower to actually get the new card in there. Im good on both. But i still have some issues. You see i bought an older dell XPS studio 8100 from a friend a while back that he had upgraded once but after getting a new rig he had basically discarded it and taken out the gtx 650 he had in it for reasons unknown. After getting windows 7 installed on to the hard drive I attempted to install this 650 again but had no luck. Black screen and beep codes. So than I tried to reinstall its onboard card and still had no luck. I got the drivers for the onboard chip (intel HD graphics series) but still i could not use the onboard card. The reason I bring this up is because im absolutely terrified of it happening again to my new pc which would make it completely unusable for gaming. And my budget is not great so getting a new pc wouldnt be an option for a long while. Ive read many different forums and watched many videos but was wondering if anyone here could give me instructions step by step on how to Install my new graphics card and get it up and running just fine. Do I have to uninstall the drivers of my current onboard AMD radeon r7 integrated chip ? Do i have to disable it and change settings in bios? What do I do in BIOS in particular? In what order should I do these things? Does upgrading from onboard to dedicated present its own unique issues? What about switching from AMD to Nvidia? Do I get the drivers before putting the new card in? Do I use the disk for the drivers? How do I start and where to go from there? These are some of the questions I have. Any and all help is appreciated. My processor is an A10 7860k and i beileve the IGP is on the same dye as the processor. Also this is an EVGA GTX 1050 ti if that makes a difference. My motherboard is an MSI a68hm grenade ms-7891. OS is Windows 7 64bit Professional. Any info needed i can provide. Never done this before so i really need the help. Would kill me to mess something up even more so because this is supposed to be a pretty easy thing and I feel if i cant even do this than I also cant call myself a PC gamer and should just go back to little league consoles again. Thanks so much for your help and time.