Open case and remove video card and smash it with a hammer. You now need a new video card. The specs of that system will offer what it needs. Why play around figuring out if the video card even works, just get another card. If you plan to fix things expect swap parts to be part of repair or final fix. Since, you have no clue this maybe all over your head. the simple things as replacing the video card isn't that hard. What are the results with the PC case open what does the PC do, note the fans or LED, etc., Most answers all being forwarded to you has been posted for YouTube or googling similar for answers even if your brand PC isn't covered the repair results are very similar, you have to sort it out. So what sounds, LED lights, actions does the PC make when power is applied? Do you have basic volt meter? Got another PSU to try? Have you visited the MESH support website for that model# and check what it requires or any s/w for a later date to install such as drivers or what have you. I tend to use the Ubuntu Linux "liver version" bootable and check to see if it can do that. Generate one and check results, provided you get it to power-up. It allows some insight as to what maybe needed to fix the PC or narrow it down. Find a "flow chart" of repair procedures, that may help or allow you again what could be a problem area. Good luck and come back with results what you've done.