X61 starts for 2-3 seconds, then turns off :-(

[Marginal]

And the problem started after I upgraded windows and because I was in a hurry, I left it before the end of the update, after I came back home, it was on, I turned it off and the problem started.
I tried unpluging it, even taking the battery off with no success.

Please help.

Thanks.

[Marginal]

Problem solved ...

[fasterbybike]

Problem solved ...

and the fix was .... ?

[Marginal]

The problem was that the power supply was damaged, therefore there was not enough power in the battery.
Now I pinched and tightened the cable with a tie wrap and everthing came back to normal.