|New batteries must be charged up for a while before the computer will start up on the battery alone. |
However, the led on the computer that indicates the AC adapter is connected / is charging the battery should light up at least briefly when you first plug it in into the computer in any case, even when the computer is not running.
There is something wrong with your laptop's or netbook's hardware if the computer will not start up with only the AC adapter connected to it.
Have you, or is it possible someone else who had physical access to this computer...
- dropped it, or dropped anything on it, or otherwise exposed it to a physical jolt ?
- spilled liquid on it, or sprayed it with liquid, or exposed it to liquid such as rain ?
Since the compuiter last worked properly all the time, has there been a power failure event that happened while the AC adapter was plugged in ?
Those things are the most frequent reasons something inside the laptop has been damaged.
We have heard of many cases where it's probable that the computer was damaged by someone else who never told the ower that they had done that.
Have you changed which ram modules you have installed and it's only since then that you had this problem ?
If YES, incompatible ram modules can cause your computer to fail to boot. If you still have the ram modules that were installed when the computer worked fine, try installing ONLY those ram modules.
Laptop no video (or video problems), and battery, AC adapter, power jack T shooting.
See response 1:
Tips about battery charging problems on Dell laptops - may apply to other makes.
See response 3 in this by iTech: