Most "why is my computer slow" articles online tell you to close some tabs and call it a day. That's not a diagnosis, it's a guess. Fix It Yourself exists to do the actual diagnosis first — walk through the real possible causes in order, narrow down which one you're actually dealing with, and only then point to a fix.
No post here is written to sell you something. Where a physical part or a paid tool genuinely is the fix for a specific step, we link to it (marked and disclosed — see our disclosure policy), but the diagnosis always comes before any product recommendation, never instead of one.
Who's behind this: [INSERT YOUR BACKGROUND / STORY HERE — e.g. what got you into troubleshooting, how long you've done this, any relevant experience]
[OPTIONAL: add a photo, credentials, or links to other projects/social profiles here once you have them]