There are many reasons why you may be running out of storage space, especially on your boot or Drive C: hard drive. Here is a good way of cleaning things up.
In Windows 10, click the Windows start button and type in
Select the appropriate drive which should be (C:) and then click the OK button to start the scan.
Once the scan completes, you should be presented with the Disk Cleanup...
'cleanup' to automatically search your system. At the top, the 'Disk Cleanup' app should appear. Click on this to start the process. You should be asked to select which drive if you have more than one drive in your system:
Select the appropriate drive which should be (C:) and then click the OK button to start the scan.
Once the scan completes, you should be presented with the Disk Cleanup...