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Hi Vicknesh. I'm Greg, here to help you with this.
- You can go back to Windows 10 within ten days by either of these methods:
https://www.yourwindowsguide.com/2021/08/how-to...
You can also extend the 10 days up to 60 days if you need more time to decide:
https://www.droidwin.com/extend-10-day-windows-...
After 10 days you'd need to do a Clean Install to Windows 10, use this gold standard Clean Install which includes everything that works best and has been used by millions with no one ever coming back with further problems:
http://answers.microsoft.com/en-us/windows/wiki...
But since you're going to Clean Install which is always a vastly better install with few or no problems, you might want to first try this WIndows 11 install:
https://www.windowscentral.com/how-do-clean-ins...
- Try all possible fixes for Windows 11 Wifi:
https://answers.microsoft.com/en-us/windows/for...
Feel free to ask back any questions. Based on the detailed results you post back, I will have other suggestions if necessary.
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