How can I resume a broken SFTP download in Window 7 console?

Solution 1:

The pscp does not support resume.

As @PeterJ commented, another tool from PuTTY suite, the psftp, does. You should have no problems resuming interrupted pscp transfer with psftp:

C:\>d:\putty\psftp root@serverip
psftp> reget /root/movie C:\movie
reget: restarting at file position xxxxxx
remote:/root/movie => local:C:\movie