6 min read · Intermediate · Related: Computer Repair

Updated October 2026 · Tampa Bay–tested steps

Slow Computer? 6 Fixes to Speed Up Windows

Spinning wheels, slow startups, fans screaming — most slow PCs are bloated software, not dead hardware.

  1. 1. Check what's hogging startup

    Press Ctrl + Shift + Esc to open Task Manager, click the Startup apps tab, and disable anything with High startup impact that you don't use daily (Spotify, Adobe updaters, game launchers). Restart and time the difference — this alone fixes about half of 'slow boot' complaints.

  2. 2. Free up disk space (aim for 20% free)

    Go to Settings → System → Storage → Cleanup recommendations and remove temp files, old Windows updates, and unused apps. A drive over 90% full slows everything down because Windows has no room for swap and updates. Empty the Recycle Bin and move big videos to an external drive or OneDrive.

  3. 3. Uninstall the junk you never asked for

    In Settings → Apps → Installed apps, sort by size and remove toolbars, duplicate antivirus trials, preinstalled games, and 'PC optimizers' that are actually adware. One real antivirus is enough — two actively fight each other and halve your speed.

  4. 4. Check Task Manager for runaway processes

    In Task Manager → Processes, sort by CPU and Memory. A browser with 40 tabs, a stuck OneDrive sync, or an antivirus scan can pin a healthy machine at 100%. Close the offender, update Chrome/Edge, and check if OneDrive is stuck syncing the same file repeatedly.

  5. 5. Run updates and a health check

    Install all pending Windows updates (Settings → Windows Update) and update your storage and graphics drivers. Then open Command Prompt as admin and run 'sfc /scannow' to repair corrupt system files. If the drive health or SMART status shows warnings, stop and back up immediately.

Slow Computer? 6 Fixes to Speed Up Windows — When to Call a Pro

  • The PC still crawls after cleanup (likely a failing hard drive — an SSD upgrade usually makes it feel new).
  • You see blue screens, clicking/grinding noises, or 'no boot device' errors.
  • You need files recovered from a PC that won't start.
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Guide FAQ

Sometimes. If Task Manager shows memory constantly above 85%, an upgrade helps. If the disk is at 100% on an old spinning hard drive, an SSD upgrade helps far more — it's the single best speed upgrade for PCs over 4 years old.
No. Most are adware or charge for what Windows Storage Sense already does free. Stick to the built-in cleanup tools and one reputable antivirus.
Remote tune-ups start at $75; in-shop SSD upgrades with data transfer typically run $125/hr plus the drive ($60–$120). Most machines are back in 1–2 business days.
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