can anyone help with this error message on my computer

ts a message which has appeared in the last couple of days on my windows computer, and i don't know how to go about fixing it, i'm no tech expert by any stretch......and the message always appears when i turn my computer on in the morning, launch google chrome and go to the youtube website, i then see this error message on the screen, here;

i'm praying me posting a snapshot of the error message helps and someone can perhaps research it and help, to go about fixing it....id appreciate any assistance, it's not a serious computer error is it??

also my computer seems to be running ok apart from that pop up error message, youtube videos running ok, websites responding ok etc.