Satellite U400-10N fails to start all by showing a black screen!

So, I press the power button, the 3 LEDS are fuctional appearing but CPU - GPU fan does not start!

After a while, it shuts it self and then he tries to start again, but the fan fails again while the power led and not others (Led 1 and 2 down).
Must say once again that the screen always appear black (maybe also dead)

I thought it was a problem of overheating, so I cleaned the fan but with not a lot of dust!
But it was not the problem crearly because I tested it!
Now I think that this could be a GPU problem, but I don't know about you!

Any suggestions that he could be and how o solve this problem? Thank you!

Hello

It may be RAM problem, it may be a motherboard problem, it can also be a problem of CPU or GPU.
Any party may be affected.
So what to do?

You can see the part as RAM. You could buy new Rams tested and could replace it but what happens if you buy new RAM modules, replace it and laptop will NOT turn on?
You would spend the money for the new RAM but eventually the other party could be faulty

So I think that a professional technician must check the unit first.
Guys could give you an answer as to the defective part and then you could decide what to do
You know what I mean?

Tags: Toshiba

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