Combo 1.7d van wont start

I have a 02 combo 1.7d van with the isuzu engine, was going ok then after using it i went back to go home and van wont start all normal lights come on on dashboard the only thing I have noticed was the glowlight comes on and off alot quicker that it did. I dont even get a click when I turn the key. I got it bump started and it went ok used it the next day ok then after that it not start again. Can anyone help in this matter.

Cheers