back with new info about the problem. first of all, the "10 seconds" idea , unfortunately, is not working. now, the info. a few days ago i mounted the battery trying to charge it. the laptop was telling me that "the battery is charging", after 5-10 minutes, the orange LED battery indicator started blinking and there was a warning telling me that there is a problem with the charging process and i removed the battery. today, after reading your tips, i putted again the battery, again "the battery is charging" and surprisingly it did, but in a strange way: it was at 93%, it remained at that level for about 15-20 minutes, then suddenly it jumped at 98% and since then ( almost 4 hrs ) it's staying at this level, the indicator is green, not blinking, all fine apparently , but still the laptop won't start with just the battery on. Now i'm trying to find someone with the same model to take his battery and see where is the problem. if the problem is the laptop, i think i'll leave it this way. i discussed the issue with other people and it turned out that is a quite delicate situation, not unrepairable but .... i really don't know .. i'll see ... if you guys have any other ideas, please share.sorry for the late reply , i had a few exams to take care of.