The following procedure should be carried out for hard reset of the Nokia C7 phones:
- Simultaneously hold the home button, camera button and the volume button.
- After that with the same buttons you got to click the power on button until the phone vibrates.
- After the procedure is complete release the power on button while still holding the three buttons simultaneously and you got to wait till you hear the Nokia sound.
This will soft reset your mobile phone and you got to wait till all the processes are carried out and it will take some time.
However
hard resetting can cause you the lose of all the important data that
you have in your phone. If you have got a virus related issue then you
can try the various virus console that are available in the computers
and also try the Nokia system's virus console where you get to learn the
different virus that can affect the Symbian phone.
If the above steps are
not working for your phone then you can contact the Nokia care system
support team which will provide you help with all the software related
issues. You have an another option that you can contact the retailer
regarding the issue and he will surely give you a better view as to how
the hard reset can be done on your phone. The hard reset option takes
some time so you have to wait until all the set processes are over as it
deletes all the files that are present in it and also depends on phone
as to how much efficiently it will work.