OK, I got off topic a bit so, I deleted the post although I see plenty of posts above telling the OP to reinstall the OS. I simply suggested a different method.
I would try a different stick of RAM in slot labeled Number One and install a GPU. Do you have a MB speaker installed? The best you can hope for without a GPU is some beeps telling you there is no GPU installed.
Maybe download DDU and download the graphics driver from Nvidia, restart in safe mode and run DDU and than restart in safe mode again. Install the Nvidia driver and restart normally.
Well, you guys can call it whatever you want, and correct me as much as you like but, I know that if you have a M.2 drive and plug a different HDD or SDD into the disabled SATA ports, there will be troubles .