Notebook Win8.1 system C disk has used too much space how to do

Fault reason:
1, first of all other people's computer installation may be a streamlined version of Win8.1 system;
2, Lenovo pre-installed Win8.1 system Metro application, Office, etc. are all Qi;
3, Lenovo pre-installed win8.1 system has a lot of Lenovo promotion software and its own functional software, many of these software is unnecessary, and are installed in the system C drive, so the newly purchased notebook The space used by the C drive in the system is very large.
Workaround:
You can uninstall some unused software in the Add and Remove Program to reduce the space occupied.