daft newbie in fear of boiler exploding.

Ok a couple of weeks ago my combi boiler in my airing cupboard started making horrid nasty vibrating noises and was so loud i thought it was going to blow up.

Looked at the water pressure bit and there was no water presure at all, is there anyone who can suggest anything else i should check for and any recommendations for people to call out to look at it? (essex uk)

Its getting cold at night and i'm running out of quilts!!

P.s the boiler was turned off straight away and i havent put it back on since

Pump run dry at the very least. Find your filling loop, get rid of air, bleed pump, make sure auto air vent is working satisfacturally, see if pump has servived, make sure no other problems like fan making the noise, find out why pressure was lost, was it just over a reasonable time because you were illinformed how the system worked or is there an underlying cause of significance.

If you can't do these things get a person who can.

Cock on not to use it, pump won't apreciate it and might need renewing already.