I have a problem with a Lenovo 3000 N200 which will not boot. When I press the power button, the power led lights up, the fan rotates shortly and then stops. Nothing more happens, no beeps, no picture (neither on the laptop display, neither on the external).
I removed all external devices and modules: DVD, WiFi, HDD, RAM, battery - no change. I tested the RAM on another machine and it works fine. Even if I start the laptop without RAM, it's the same behavior.
This thread has the same issue described: http://www.dslreports.com/forum/r23049602-hard-drive-Lenovo-3000-N200-laptop-fan-starts-stops-wont-bo
. A guy mentions:
The same thing happened to mine. It was a motherboard fault that Lenovo are very familiar with, apparently related to the CPU temperature.
One thing you can try is to keep trying to boot it, if it's the same problem the CPU will eventually warm up enough for it to boot and run ok.
I tried keeping it on for a while and I noticed that it's getting warmer. There was no change in the behavior though.
I can have some experience in opening, cleaning and fixing small problems with laptops, so I can do such repairs if I know what to look for. Changing the motherboard and/or the graphic card is not worth it though (they cost $150+ on eBay).
Any suggestions what to try?