Maybe it is problem of your power supply unit or device itself. You may try a different power supply unit if there is extra one. Besides, try to hard reset your device. If neither work, i think it is...

Hermant, confirm that your internet is working when modem is plugged into your PC directly. If there is WAN IP address but on internet, probably, it is a DNS issue. Try to ping or open google's IP...

I think you can try to fix different channles for your wireless network connection. Maybe there is a conflict.

You can set up the schedule from 22:00 to 24:00 and from 0:00 to 6:00.

It may be an anti-virus issue. I know there is another way for your to connect to a wireless network. I will post it here for your reference. 1. Right click on Computer and go to manage. Go to...

If you tried to reset it but it goes off constantly, I think there is a problem with wireless module, a hardware issue indeed.