When I turn it on the fan comes on strongly then cuts to a lower rpm abruptly. No light comes from the screen. As I said the caps lock and num lock lights flash once every 2 or 3 seconds. The light by the power plug stays on solid. I am not sure how it could matter but I should also mention that we got a new wifi router the day before this happened. There is other helpfull information here.
Do you have any ideas about what might be the problem?