You must have seen a pci-e slot which we use to plug in the graphics card. I plugged a graphics cad into it and then i wanted to remove it for some purpose.I removed the screws from the back panel(Where there are the HDMI and display ports) and hen i was trying to remove the GPU but it was not coming off. Supposedly, it was a small piece of GPU that was stuck in the slot. I don't know what to call it. It was at the end of the slot and it was like a clip. I had to press it to remove it but it was not coming off so i pulled the card and the clip like piece came off the mobo. The clip on the GPU is intact but the place where it is supposed to be is broken. I haven't turned on the PC since because i want to know whether the PC will work without it or no. The GPU removal is easier since. Your reply is most awaited folks.