I have an HP Pavilion g7-1167dx Notebook PC running Windows 7 Home Premium. When I turn it on, the only LEDs to come on are the power LEDs (on the side and power switch), and the network LED on the F12 key. I am not able to get into the hardware diagnostics via the F2 key. The fan runs normally. It had been happening intermittently before, but I would just wait a while and it would eventually boot up again. When it finally never came back, I carefully dismantled it, as per the Maintenance and Service guide, (on an appropriately ESD protected workstation), and gave it a good cleaning. It was very dusty on the inside. Unfortunately when I reassembled it, it still does not work. The computer is just over two years old. Product number: LW414UA#ABA
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