hello everybody i have dell latitude 5520 I tried to open it to see the reference of the motherboard it had a bios password, I removed the ram and the battery, after I tried to restart is I fell on the problem of 3 blink orange and 6 blink white and black screen keyboard and screen backlight is OK, sometimes The screen flashes different colors(red,blue,green and white) at start.any idea pleas
tank
tank
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