Hi, i have a 4 year old Dell Studio 1557, in the last 10 days randomly on the laptop screen appear colored stripes and then the screen goes black only with retroillumination;
When i try to turn on the laptop after this problem sometimes appears a black screen not retro illuminated, sometimes a retro illuminated black screen and sometimes the laptop starts correctly but then blocks itself on a black or colored stripes screen
I've already tried to do the screen test and returns white black red green blue white black red green and the the screen goes black
Suggestions or Diagnosis?