Hi Appu S !
I have a similar problem with my dell 7720 !
I have seen yellow exclamation marks with the USB drivers !
I uninstalled all of them then restart and at that time THERE IS not a single
working USB socket !!! (before 4 right sockets )
All sockets are "dead" !
I have windows 10 and please help me to reach my USB connections again !
I have a driverbooster program and all drivers checked !
They are all up to date and there is not a single MISSING driver !
thx for your advise it would be urgent .
I don't want to reset my OS !
I made a troubleshooting with windows 10,but all was well found :
Windows 10 troubleshooting results :
My device manager :