Please help arduino connectivity problem

Arduino was working properly in my system. After I uninstalled and reinstalled it again I was unable to connect arduino to windows 7 32 bit. There is no problem in arduino but pc isn't recognising it. Please guide me

I would suggest READING THIS post then adding any additional details.

There are multiple reasons for not being able to see an Arduino.

  • There is a problem with the board.
  • You have something connected to pins 0 and 1.
  • The USB cable is faulty in some form.
  • You do not have the correct driver installed.
  • There may be a problem with the PC.
  • You may be selecting the wrong COM port.

There will doubtless be others too.

The forum has a good search feature which will gather up relevant results in Google for you.
See the magnifying glass at the top right ?