How to fix when my computer is running slow for windows 10?

If your computer is running slow for Windows 10, it's a good idea to verify a couple of things to keep it performing well. 

First, you should check if the TRIM feature is enabled. TRIM helps your SSD manage deleted data more efficiently, which keeps it running smoothly.  To do this: Open an elevated Command Prompt (run as administrator) and type fsutil behavior query DisableDeleteNotify. If the result shows DisableDeleteNotify = 0, TRIM is active. If it shows 1, TRIM is turned off, and you can enable it by typing fsutil behavior set DisableDeleteNotify 0 and then restarting your computer.

Next, look at how much space is left on your SSD. If it's nearly full—more than 80% of the drive's capacity—your system may slow down because there's not enough free space for the SSD to operate efficiently. To check this, open File Explorer, right-click your SSD drive, select Properties, and see how much space is used versus free. If it's too full, consider deleting unnecessary files or moving some data elsewhere to free up space. Sometimes, this is the reason why my computer is running slow for Windows 10. Taking these steps can help improve your SSD's speed and overall system performance.