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.
One of the most important contributors to the Renaissance was Leonardo da Vinci. He pioneered the style of realism within his paintings, most notably with the Mona Lisa.. He was also the first artist to combine art and science, drawing off the anatomically correct human form for his works.