Solidworks 2014 crashing in two situations, one during sketching in part mode and during moving or placing a note in drawing mode. What are the possible solutions?

I have Solidworks 2014 installed. It suddenly crashes during following situations:

1. Creating sketch:

Especially when I create a line, it crashes suddenly.

2. Placing and moving a note in drawing mode:

The note is saved in library and is loaded from note command during placement. Now to place that note at a position, when I move the mouse pointer, it crashes.

This happens randomly and everytime I do the above tasks.

Please provide solutions.

SolidworksGeneral