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.
Also another factor which contributed to the beginning of the Renaissance was due to the opening of Mediterranean trade routes in Italian city-states, which led to the growth of a new and influential merchant class. They used their wealth to sponsor great works of art.