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Black screen, fan runs at high speed

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Hi Community

I have a problem with my VOSTRO 3360. At power on the hard drive LED flashes a couple of times and I can hear the disk head moving and then the fan  speeds up and nothing else occur. The fan keeps running at high speed and the screen remains black all the time.

I have made following tests:

1. When I remove the RAM from the pc I can hear 2 diagnostic beeps.

2. If I keeps pressing the F2 key during and after pressing the power botton I hear after a second or so, short beeps, as when the keyboard buffer is full.

3. I have disconnected the main battery and removed the coin-cell battery. When the batteries are reconnected I hear 5 diagnostic beeps at the first power on. After cycling the power I hear no beeps and it starts as initially described.

Any good ideas are appreciated.Thanks.


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