Aspire 7540 does not start

Aspire 7540-1284 stop down.  Work is to put and the blue lights work but it just lets me know the Hd is there but gets then quiet - nothing shows up on the screen.  He is 5 years old and I just reinstalled Win 7 Pro this week.  I removed the battery.  Same thing.  I put the HD in an external enclosure and hooked it to another laptop and it is fine.  Suggestions?

It's the mothrboard. :-(  After taking the HD and memory, how can I have the laptop?

Tags: Acer Laptops

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