SolidWorks 2012 Crashes

Hello,

i recently installed solidworks 2012. for a couple of days it was working perfect and smooth. but now i face a problem that solidworks crashes when i try opening a .slddrw file

also if i make a 3d model and then use the option of making a 2D drawing from a 3D model the application crashes.

this is the problem i had with solidworks 2010 as well when i had installed it.

kindly suggest some solution

my pc configurations is

Intel  Pentium D - 3 Ghz

2GB ram

intel g965 graphics - 384 MB

SolidworksDrawings And Detailing