If you just want a very quick yes/no using built in tools, use the "comp" command
It is an old command and it is really only designed for individual files, but it works well - you will need to run it twice as it will only compare for files it can find:
This will compare all files in c:\temp\1 against c:\temp\2, then in reverse:
comp c:\temp\1 c:\temp\2
comp c:\temp\2 c:\temp\1
If a file is in one location but not another, you will see: "Can't open file: c:\temp\2\bla.txt"
If a file is different, it will report it as such, for example "Files are different sizes."
If everything checks out, it will say "Files compare OK".
The reason for running this twice is that it will only check and compare files in the second location that it found in the first, so by running it twice, you search both locations for any files that may only be in one folder.