Computer Running Slow After a Windows Update — How to Fix It

A slow computer after a Windows update is extremely common. Updates can leave background processes running for 24–48 hours, reset power settings, or install generic drivers that replace better manufac

Common causes:

Windows Update background tasks still running for 24–48 hours
Update installed a generic driver replacing a better manufacturer one
Power plan reset from High Performance to Balanced
Indexing or antivirus triggered by new update files
A failed update leaving Windows in a degraded state

Wait 24–48 hours before taking action

After a major update, Windows runs background optimisation tasks. Give it a full day before troubleshooting.

Check Task Manager for high-usage processes

Ctrl + Shift + Esc. Sort by CPU and Disk. Common temporary culprits: TiWorker.exe (Windows Update), Antimalware Service Executable, SearchIndexer.exe.

Restore the power plan

Search Power plan in Start → Change power plan settings. Change to High Performance if reset to Balanced.

Roll back a problem driver

Device Manager → right-click affected device → Properties → Driver tab → Roll Back Driver.

Run Windows Update Troubleshooter

Settings → System → Troubleshoot → Other troubleshooters → Windows Update → Run.

Clear the Windows Update cache

Command Prompt as admin: net stop wuauserv then del /q /f /s C:\Windows\SoftwareDistribution\Download\*.* then net start wuauserv.

When to call a technician

If still slow after 48 hours and all fixes tried, a failing drive exposed by the update may be the cause. TechFix Pro diagnoses on-site with No Fix No Fee.

Call 0434 358 263 WhatsApp

Frequently asked questions

Why is my computer so slow after updating to Windows 11?

Windows 11 has higher hardware requirements. On older laptops the post-update background tasks combined with new requirements can feel much worse. An SSD upgrade is the most effective remedy.

How long does Windows run slow after an update?

Background post-update tasks typically complete within 24–48 hours.

Can I undo a Windows update?

Yes — for 10 days. Settings → Windows Update → Update history → Uninstall updates. Find the most recent update and uninstall.