MSFS Black screen

I ran out of memory space so I downloaded another copy of MSFS on the extra drive(windows installed on it already) now the main version on the C drive isn’t working anymore (loading to an only black screen) I uninstalled it and redownload again but still haven’t the same issue!! I though it’s permitted to download 2 copies of the software but can’t use both on the same time…unless something else is wrong. Please let me know what could be the problem. Thanks

Folks I figured it out…using Voice Meter Banana audio software will mess up MSFS and it won’t work while it is on. So using an audio software could mess up the sim and I could never thought of this!!!

Closing as issue solved by OP.