Win7 system c disk folder which can be safely deleted?

1, the first can delete the old file, the system file that comes with the windows7 system, the file itself has no effect, it has nothing to do with the system operation, you can rest assured to delete.

2, temp file is a temporary folder generated when you run the windows7 pure version of the system, will be automatically deleted within a certain period of time, if necessary, you can manually delete.

3, log file is the file generated by the file lock when the windows7 system is running, that is, record the user's use process, recorded in the notebook, it has nothing to do with the operation of the system, but also deleted.

4, bak is the backup folder of the installation system, is to prepare for the user to lose the file, whether to delete this folder is to see the user's own needs.