So I have a DX4870 which at stock was Windows 7 with integrated graphics, never used the PCIE slot, until recently when I updated it to Windows 10, bought a new PSU so that I can use my newly bought graphics card as well(Gigabyte Rx460), and replaced the ram sticks. I also transfered everything into a new bigger case that just has LED's to make it different. After moving everything into the new case, apart from insterting the graphics card, everything worked fine, although there was a little bit of a problem because the front panel wirings were a little different than the old case so it wouldn't turn on due to it having to be plugged in the mobo a certain way and was solved. I turn it on, (without the graphics card in yet) everything works fine. I switch it off, put in the new graphics card, turn it on and everything apart from the LED's, Optics drive, and the graphics card because clearly power is going to it since the fans are spinning, nothing works. All the ports don't work because prior to inserting the graphics card, the lights on my mouse would turn on, as well as my keyboard, on my wireless adapter, and the computer screen would show something. I switch it off and take the graphics card out and turn it back on, everything works again, it's just that my computer will not work with the graphics card in. What could be the problem? It's certainly not the graphics card itself because I tried using it on my friend's computer and everything works with his, unlike mine. Any help would be greatly appreciated.
