Back to collection

    Computer is Running Very Slow (Windows)

    Last updated 14 June 2026

    Is your Windows PC feeling sluggish? Programs taking forever to open? This guide will walk you through the most effective steps to speed up your computer.

    Symptoms

    • Programs take a long time to open

    • Frequent freezing or lag, especially after startup

    • High disk or CPU usage in Task Manager

    Step-by-Step Resolution

    1. Restart Your PC

    Click Start > Power > Restart. After restart, wait 2-3 minutes before opening apps. This clears temporary files and refreshes system processes.

    2. Check What's Using Resources

    1. Right-click the taskbar and select Task Manager

    2. On the Processes tab, sort by CPU and then Memory

    3. If a program you recognize is constantly at the top and you're not using it, right-click it and choose End task

    3. Remove Startup Programs

    1. In Task Manager, go to the Startup apps tab

    2. Disable anything you don't need starting automatically (for example: Teams, Spotify, Adobe Updater)

    3. Restart your PC to apply changes

    4. Free Up Disk Space

    1. Go to Settings > System > Storage

    2. Turn on Storage Sense if available

    3. Click Temporary files, select Downloads (if safe), Recycle Bin, and previous Windows installations

    4. Click Remove files

    5. Run a Malware Scan

    1. Open Windows Security from the Start menu

    2. Click Virus & threat protection > Quick scan

    3. If anything is found, follow the removal prompts and restart

    6. Update Windows and Drivers

    1. Go to Settings > Windows Update and install all important updates

    2. For display and network drivers, open Device Manager, right-click the device > Update driver > Search automatically


    Still experiencing issues? If your PC remains slow after these steps, it may need hardware upgrades (SSD/RAM) or deeper cleanup. Our team at My IT Butler can help optimise your system with a remote session.

    Book a Support Session

    Still need help?

    Lodge a ticket and I'll get back to you, or open the chat for a quick question.

    Lodge a ticket