Dear aspirant

You need noy to worry for the rough work. They'll provide you the rough sheets to do the rough. Now they have started providing you with the laminated sheets so you may buy them from the shops to get used to them which will help you there in exam. Even if the computer program stops working you need not to worry there as well. You may take help of the invigilators there and ask them to change your PC.

Feel free to ask any other query in the comment section below.