I-7 9700 OC to 4.7Ghz, MPG 2390 Mobo, 32 Gig ram, Dark Rock Pro fan, 1-TB SSD, 4-TB rotating drive, RTX 2070 Super, LG 34" curved monitor, Honeycomb Yoke and Throttle quadrant, Windows 10.​ 9.8k PostedOctober 10, 2020 ...
Try double-clicking theFSUIPC7.exefile (with or without MSFS running) in Windows Explorer. Does FSUIPC7 start, i.e. do you see the FSUIPC7 splash-screen displayed at start-up? If not, and if you get a windows error, then this is usually a sign that the correct VC++ redistributables...