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Hi SradhaInd,
Welcome to Microsoft Community.
I'm Hahn and I'm here to help you with your concern.
It sounds like your laptop is experiencing some unusual behavior with browser tabs opening on their own and HP hardware diagnostics popping up when the internet is off. Here are some steps you can try to troubleshoot and resolve these issues:
- Run Antivirus and Malware Scans: Start by running a full antivirus scan on your laptop to check for any malware or viruses that might be causing these unwanted pop-ups.
- Clear Browser Cache and Cookies: In both Chrome and Edge, clear the cache and cookies to ensure that there are no corrupted files causing the tabs to open automatically.
Disclaimer: Your browser automatically saves temporary internet files to help pages load faster. Clearing this cache will sometimes fix website issues. Please back up all your personal files first, such as Favorites, to ensure you do not lose data.
- Reset Browsers: Resetting your web browsers to their default settings can often resolve strange behavior like unwanted tabs opening. Here's how to do it in Chrome and Edge:
- For Chrome: Go to Settings > Advanced > Reset and clean up > Restore settings to their original defaults.
- For Edge: Go to Settings > Reset settings > Restore settings to their default values.
- Safe mode starts Windows in a basic state, using a limited set of files and drivers. If a problem doesn't happen in safe mode, this means that default settings and basic device drivers aren't causing the issue. Observing Windows in safe mode enables you to narrow down the source of a problem, and can help you troubleshoot problems on your PC. Start your PC in safe mode in Windows - Microsoft Support
- Creating a new user account is an effective troubleshooting step because it can help determine whether the problem is related to the entire system or just to a specific user account. Please follow the steps below to create a new user account: Create a local user or administrator account in Windows - Microsoft Support
If the problem does not exist under the new account, the problem may be related to your previous user profile. In this case, you can try to repair or reset the profile of your existing user account, or continue using a newly created account.
I hope this helps. If there is anything not clear, please do not hesitate to let me know.
Your Sincerely
Hahn - MSFT | Microsoft Community Support Specialist