dishwasher?

First step would normally be to let people know the make and model.

Never mind.

You could check the water supply is "on" and that the hose is not kinked.

You could check the little strainer at the inlet end of the hose is clear (and maybe check that you actually get water through the hose, whilst you have it disconnected to check the strainer).

It could well be that the inlet valve is u/s. Replacements are not usually expensive and generally simple enough to fit but you WILL need to know the make and model (and possibly serial number of the machine) to order one.

Good places to look for parts are espares or ransomspares

XXX
January 2017