After some confusion I received your response of 5th January. After the scan was completed the botXXXXX XXXXXne on the screen read c:\windows\systems>ls I then added cd c:\Windows as you suggested. It then responded lscd c is not a recognised question. Please can you help. Incidentally, as I mentioned whenever the mains power is connected the screen goes black, thus I have to do this exercise on battery power and then recharge it each time! Please can you help some more? Thanks.