Slow Notebook Computer

[Bigfoot-14]

My granddaughter has a HP Stream - 14-ds0013dx notebook with AMD A4-9120e Dual-Core and 4 GB DDR4-2133 SDRAM.  It is so slow she barely use it at school.  I have run all of the HP diagnostic and optimizations with no improvement.  It is still under warranty but I have had no luck in reaching HP tech support.  Any suggestions besides throwing it in the dumpster.

[WAWood]

@Bigfoot-14 

While the Stream is basically a "netbook" -- an entry-level laptop -- and it not going to be particularly fast, it DOES have an SSD instead of a hard drive, so it should be fairly responsive -- that is -- until the drive nearly fills up, which can happen easily if you don't routinely run the clean-up stuff listed below ...

Here are some things you can do to recover some of the disk space:
http://www.tenforums.com/tutorials/3012-disk-cleanup-open-use-windows-10-a.html
http://winaero.com/blog/how-to-clean-up-winsxs-folder-in-windows-10/

Also, the community Win10 Forums has the following suggestions:
https://www.tenforums.com/tutorials/83441-free-up-drive-space-windows-10-a.html

Finally, there is a freeware app known as Wise Disk Cleaner. I use it every day to get rid of junk files: https://www.wisecleaner.com/wise-disk-cleaner.html

If it still runs really slow after that, there are hardware issues and we can not fix those.