How to remove the word"ongoing stoppage"in laptop a50-a635 during starting

[Jackson_15]

Hello, i have problem to my laptop Toshiba satellite C50-A635, i switched of by following steps as do everyday but when i want to start it again the screen coming blue with white point and write . ONGOING STOPPAGE.I need help, Jackson from Tanzania

 

[jsmithepa]

That's one odd computer message, I wager virus.