← All Documentation
What it does
This page bundles the Windows repair commands that IT techs type from memory — sfc /scannow, DISM /RestoreHealth, flush DNS, reset Winsock, and more — into a clickable checklist. Tick the boxes for what you want, click Run Selected, and watch the live log on the right. No command prompt required.
The categories
Disk & Storage
- Clear Temporary Files — empties
%TEMP% and C:\Windows\Temp.
- Run Disk Cleanup — launches Windows' built-in
cleanmgr.
- Empty Recycle Bin — permanently deletes everything in the bin.
- Schedule Disk Check — queues
chkdsk to run on the next reboot so it can scan your system drive for errors while Windows isn't using it.
Network
- Flush DNS Cache — forgets stale address lookups. Fixes "this site works on my phone but not my PC" issues.
- Reset Winsock & TCP/IP — rebuilds the deep-down networking stack. Can fix internet that stopped working for no clear reason.
- Set DNS to Google/Cloudflare — switches your DNS servers to
8.8.8.8 or 1.1.1.1 which are often faster and more reliable than your ISP's.
- Release/Renew DHCP — asks your router for a fresh IP address.
Security
- Enable Windows Firewall — turns it back on if a bad installer or malware disabled it.
- Enable Windows Defender — re-enables real-time protection.
- Enable UAC — switches User Account Control back on (a reboot is needed to fully apply).
- Trigger Windows Update — forces Windows to check for updates right now.
System Repair
- Run SFC /scannow — System File Checker. Scans every protected Windows file and restores any that are missing or damaged. Takes 5–15 minutes.
- Run DISM /RestoreHealth — repairs the Windows component store (the library SFC pulls replacement files from). Run this if SFC reports errors it can't fix.
- Create Restore Point — saves the current state so you can roll back if something goes wrong later. Do this first, always.
- Reset Windows Search Index — rebuilds the search database if Start menu search has stopped finding things.
Cleanup & Maintenance
- Clean Hosts File — restores
C:\Windows\System32\drivers\etc\hosts to defaults. Malware sometimes edits this file to hijack websites.
- Manage Startup Programs — opens a dialog showing what launches with Windows, so you can turn off the ones you don't need.
- Clear Browser Caches — calls the browser cleaner for Chrome, Edge, Firefox, etc.
How to use it
- Go to Repair → System Repair Tools.
- Turn on "Create Restore Point" first. It's an insurance policy — five seconds of patience buys you a safety net.
- Check the boxes for anything else you'd like to run. Select All is safe for most people.
- Click Run Selected.
- Watch the log on the right. Each step writes its progress live, so you'll know if anything fails.
A good monthly routine: Clear Temp Files, Flush DNS, Run SFC, Create Restore Point. Takes about 10 minutes and catches most everyday issues before they become real problems.
Reset Winsock is powerful but occasionally causes VPN software or unusual network configurations to need reconfiguration. If you use a corporate VPN, reach out to your IT department before running it.