|First of all hard drive disk space is classified as storage, not memory. If the disk space is nearly full you probably have many temp files and downloads that you don't need anymore.|
Occasional housekeeping is your answer, not a factory reset. Lots of work after a factory reset and you may lose files you meant to keep.
I suggest you download Ccleaner Slim from the link below and run the cleaner module.
If you have files you would like to keep then why not burn them to disk?
message edited by OtheHill