Cannot connect to Wifi in my samsung tab4

I just bought a Samsung Galaxy Tab4 SM-T230. Initial usage of Wi-fi was going fine but recently I am not able to turn of Wi-fi at all in the device.Tried couple of trouble shooting options ,but no use.The Wi-fi icon in connection settings gets auto-disabled after 3-5 when I try to turn it on .Same is the issue with the bluetooth setting.

Would appreciate any help!!

Thanks in advance