Here's the batch file; only three lines:

@echo off
cd\nvda211
NVDA.exe

This is my second try.  First try did not have the cd command but just said:

@echo off
nvda211\NVDA.exe

Of course, that batch file is in the root of the thumb drive.

When I start NVDA using the Batch file, the (assumed) title bar says:

C:\WINDOWS\system32\cmd.exe


The rest of the screen appears to be blank.

Howard