My laptop is an Acer Aspire 4736Z model.

One night I've been playing Sims3 and decided to sleep early so i quit and save my sims3. While my laptop is currently saving the game, my brother accidentally pulled the charger's plug and my laptop died (there's no battery inserted in my laptop in that moment). When i tried to turn it on because i was so worried about the game's data it doesn't turn on but the power lights up and the fan was running but there's nothing appearing in my screen and it's all black. after 30sec the power lights off and the fan stopped running.

So my dad decided to take it to the repair shop. The repairman told us that the problem is an IC of the video card. after 3 working days i got my laptop back. On the first day, it is working properly, But on the second day the same problem occur.

Now, I'm doubting about the real problem of my laptop. is it really the IC? or there is something else?

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It could be (too) many things. Have you contacted the shop to let them know what has happened, and to see what remedies they have to offer? Do you know exactly what it is the shop did? – techie007 Nov 15 '11 at 16:39
In the future, don't run your laptop without the battery. Without the battery, the supply voltage can dip too low when the CPU comes out of a low power mode. Because of the inductance of the power wire, the charger cannot supply power fast enough to cope with instantaneous increases in CPU power demand. These voltage shocks decrease component life. (More modern laptops slow the CPU clock to protect themselves but many older ones don't.) – David Schwartz Nov 15 '11 at 16:50
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