I have learn this things

                                         

         I have learn many things such as disk fragmentation,disk cleanup and many tools.We must need it because sometimes we don't know that problems that cause your computer have easy solutions.Some times to restore your computer to its earlier good condition we must use a system tool called system restore.When there is some fragmented files and contiguous files use disk fragmentation.To get rid of of unwanted and unused files we must use this disk cleanup.Now we know how to make solutions to this common problems,now we can fix our computer without the technicians when we encounter this.