firstly, I have to let you know, I am not working with DELL laptops often ( actually, I can't remember, if I was fixing some board issue on DELLs ). And now I got for repair one from my friend. He bought it as a not properly working one, and its history is almost unknown. The issue is, it can not boot. This is not important in this situation.
Now, let me clarify the confusion in the topic name - the friend claims, that the model is Precission 5540. And when I get into BIOS settings, I can see the service tag [B]CMR4533[/B], which indicates he is right. But...
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