how to check files' MD5
step commands:
1. change directory to where your file stores, assuming the files are put in disk D
run: d:
2. list all files in disk D
run: DIR
3. get the MD5 you want to check:
run: certutil -hashfile $filename MD5
you also can get its value of SHA1 and SHA256.
certutil -hashfile $filename SHA1
certutil -hashfile $filename SHA256