few weeks ago, I tried to start up my laptop but it didn't want to boot. I was having the leds indicating battery and power blinking for few seconds but then nothing was happening.
Then, I brought it to a computer service shop where they didn't find anything, but after they re-assembled the laptop it did work fine again.
Today, I started it up and I was reading my email, when it shut abruptly it off.
I tried to start it up, but no life sign whatsoever was given as feedback. The leds are totally black. Nothing happens at all.
I am planning to bring it again to the computer shop, but what might be the cause of this problem and what is the problem?
Note also that I have changed the motherboard about 7 months ago.
Thanks for any help,