1. Check Browser Settings – Make sure browser settings have not been changed
2. Clear Browser’s Cache and History – Delete all existing stored data in the browser’s cache and history
3. Check for Malware – Scan your system for existing malware
4. Update the Browser – Download and install the latest browser updates
5. Reinstall the Browser – Uninstall and reinstall the current browser you are using

If you have followed these steps and the problem persisits then you may need to contact your internet service provider for further guidance.