Hello Yourlvlone,
First things first - when you turn your pc on, does GPU fan spin? In other words, have you plugged in necessary 6 pin power supply cables? I know I did this mistake making my first PC build. If your answer's no, then that's the issue. If you have done it, however, there may be some confusion between your integrated graphics (ati radeon 3000, which comes with your AMD processor
) and Geforce GPU. To check whether that's the case, you will have to restart your PC, enter BIOS utility (to do that, follow the screen that shows up right after restart/boot closely, as the key required to enter BIOS differs from system to system. some examples what to look for:
--'Press F1 to enter setup'
--'BIOS settings: Esc'
--'Setup = Del'
--'System configuration: F2')
Upon entering BIOS, looking for video adapter settings, in advanced settings menu. There you may choose which graphics source to use for video rendering, either integrated or PCI-E (choose this one if integrated graphics were selected). If this doesn't change anything, then your other best bet is to try your GTX 560Ti in another computer and see if it works there, to identify whether the card is working properly itself. That's all I can help with, let us know how it goes