Need some help and advise as its my 1st time

[Jazzyb91]

Hi can someone please help me this is my 1st time incubating and I'm sure my duck egg has died as there was a power cut last week in my whole area for 4 hours and the incubator switched off after that I noticed a red line inside my egg and there has been n9 change, there is a air sac and a little dark at top but as I said n9 change, the chicken egg i cant see whats going on as its a dark egg but has lots of patches on the shell, also doesn't seem to have changed.. I have 4 quail eggs and they are near impossible to candle so I don't k ow what's going on with them? Please can someone help me thanks so much

 

[nuthatched]

It wouldn't have died from the incubator being off for a few hours, can you get pictures of the egg being candled in a dark room?