Windows 10: Why is my disk space so low?

I know I have a bad pc,But still, one day the drive went from 40gb to 900mb. I've checked, and nothing big seems to be causing it. Here are some screenshots:At this point, I really can't do anything with it. I can barely play minecraft and roblox, but they are very laggy.If I could get any help, that would be great.

:)

 

low disk space error

I got lost after "Policies".I couldn't find Explorer.There's no low disk space checks.When I back click,there's no Advanced .I have an HP19 desktop with Windows 10 installed.Drive
D is the recovery drive.

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low disk space error

I have a HP19 desktop.I keep getting an error that says low disk space on the recovery d drive.How do you fix this?How do you free up space or prevent the message from showing up ?This is what I did and I got lost:

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I got lost after "Policies".I couldn't find Explorer.There's no low disk space checks.When I back click,there's no Advanced .I have an HP19 desktop with Windows 10 installed.Drive
D is the recovery drive.

 

low disk space

Here are a few obvious options:

1. Delete unneeded things.
2. Increase your partition size.
3. Replace the disk with a larger one.

 

Low Disk space and no storage

Hi Katie,

There are times when your Windows PC will let you know that it's low on disk space to prevent information loss. When your PC doesn't have enough disk space, it will affect the performance of your PC. Please answer these questions so we can isolate the cause
of your concern:

• What troubleshooting steps have you done so far?
• How much disk space is available at this time? Can you provide me a screenshot of the current disk space?
• What is the current OS Build of your PC? Click the Start button, then type
  winver, and then press Enter to verify this information.
  

You can also visit this
article on how to free up more drive space to improve the performance of your computer.

We're looking forward to your reply.