Hello Kuldeep,
thank you for providing this question.
I am a seasoned Windows expert with almost a decade in usage and support experience and hope to resolve your problems quickly.
Go to energy settings, select your current power plan, click advanced settings and here for the Wifi adapter disable "Allow the computer to turn off this device to save power"
If this did not change anything of the situation then the most likely possibility's are that either your driver is broken or your wifi adapter (hardware).
To further troubleshoot this please go to Device Manager, uninstall the driver of your hardware Wifi adapter and reboot. See if the problem persists.
If you consider your problem solved it would be very good if you marked the answer which helped you so others can find and use this thread.
If this didn't solve your problem or you need further assistance please answer in this thread and i would be happy to help.
kind regards
F. Grobusch