You can run a check using apt, from the man page;
check
check is a diagnostic tool; it updates the package cache and checks
for broken dependencies.
Simply run;
$ sudo apt-get check
You can also try to run your apt-get command with the '-f' option (again from the man page);
-f, --fix-broken
Fix; attempt to correct a system with broken dependencies in place.
This option, when used with install/remove, can omit any packages
to permit APT to deduce a likely solution. If packages are
specified, these have to completely correct the problem. The option
is sometimes necessary when running APT for the first time; APT
itself does not allow broken package dependencies to exist on a
system. It is possible that a system's dependency structure can be
so corrupt as to require manual intervention (which usually means
using dpkg --remove to eliminate some of the offending packages).
Use of this option together with -m may produce an error in some
situations. Configuration Item: APT::Get::Fix-Broken.
Your command would simply be;
$ sudo apt-get -f install win1.7