This usually indicates a failure of the backlight inverter. If you shine a very bright flashlight on the screen and can see a recognizable pattern like the OS desktop, that is almost certainly the case. If you are handy and it is an ordinary laptop, you can usually get the part on eBay and swap it out yourself.
Fra Angelico was an early Italian Renaissance artist and a monk, considered to be one of the most talented fresco painters of his time. He was born Guido di Pietro in approximately 1395 at Rupecanina in Mugello, but nothing is known of his parents.
Fifteenth-century Italian Art, often (and not incorrectly) referred to as the Early Renaissance, generally means artistic goings-on in the Republic of Florence between the years 1417 and 1494. (This doesn't mean nothing happened prior to 1417, by the way.