Here are some common situations and tricks to avoid black screens and other issues  :

Operating system Game Type	Windows XP	Windows 7	Windows 8/8.1	Windows 10
Desktop Browser game Directx 7, Directx 8	Native	Native	Native	Native
Directx 9	Native	Native	Set GAME compatibility to windows 7	Native
Directx 9 + optional Directx 11 features	Native	Desactivate AA and any DX11 features	Set GAME compatibility to windows 7, desactivate AA and any DX11 features	Native
Directx 11/12 only	Impossible	Unsupported	Unsupported	Native
Opengl	Unsupported	Unsupported	Unsupported	Unsupported

• Native : you have no special action to do , do not force moss or game compatibility
• Unsupported : your screenshots will be be black , I have no solution
• Impossible : your game wont start anyway !
• tricks : try to use the trick suggested

Special cases :

Laptop with discrete GPU : force Moss to attach to the integrated GPU (Intel one usually)

use the forum if you still have issues : https://nohope.eu/forum/

Error Messages : 

Moss includes an autoupdate system and thus refuses to run if unable to update to the last version or prevented to check it.

this may come from access restrictions at pc level or ISP restrictions , here are the potential error messages :

Error 1 InternetConnectFailure : Moss can’t access to Internet , most probably a firewall/antivirus block it , or your connection is down

Error 2 InternetSessionFailure : Moss can’t access to http://nohope.eu , same reasons or a specific barrage to the site

Error 3 ConfigDownloadFailure : Moss cant download the last version file

Error 4 FileDownloadFailure : Moss can’t download the update

Error 5 NoExecutableVersion : The downloaded update is not a program or is corrupted

Error 6 UpdateNotRequired : you already got the last version ( appears only in final log)

Error 7 UpdateNotComplete : something went wrong locallly :, disk full , download deleted by AV …