Restore Error on Samsung Galaxy I9003

Hello All,
I ran factory reset in my Samsung Galaxy I9003. Afterwards, when I tried to restore my backed up applications from my laptop, I get a Restore Error. I have attached a screenshot of the error received below. I checked the connections to ensure that the device is connected and can be seen on my laptop. What might be causing this error that says the device is disconnected then? Does anyone have any idea please? Was anything wrong with my restore operation? How can I find out? I am counting on your help to fix this issue. Any help on this will be greatly appreciated.

Restore error
