Tserenlhagva :
Okayyy meybe it's onboard
Can I out crappy Gpu
And change it later?
The GPU that is built in to your CPU (AMD calls those APU's) is a half decent GPU. You wont be playing any high end games on it, but it will at least get your computer up and running until you get a proper video card later next week. When you install it, load the latest AMD drivers from here
http://support.amd.com/en-us/download
When you get to step 3, it'll ask what product you have. Select "A-Series APUs w/Radeon R5 Graphics"
Download the driver, install and you're good to go till you get your next video card.
When you get your next video card. Before you install it, download the appropriate drivers for it (don't install it, just download it).
If its an AMD driven card, then go back to that same driver page I linked above.
If its an Nvidia product go here
http://www.nvidia.com/content/global/global.php
Click on your country, click on drivers, and then download the appropriate driver for your card.
Next, uninstall the current AMD video driver. You can do this via Control Panel - Programs - Uninstall Programs
Turn off the computer, and install the video card. Plug it in and turn it on. You're motherboard "should" auto switch to the new video card. If it doesn't, go in to the BIO and switch your video display to the PCIe option.
Once you're in Windows, run the driver installer you downloaded and make sure you select the option of doing a "clean install". This will (should) wipe out any existing video drivers and install the current ones cleanly.
If you run in to driver mishaps because your computer didn't uninstall the last driver set correctly, then I'd look at links that peptobismal gave you. Those clean install utilities are really only needed if things go wrong.