Now, first make sure that the power adapter / cord is fine and is giving right output voltage. If the adapter is broken it will not charge up the laptop and so you can see this behavior.
What we just did is, we drained all charge from your motherboard. But it still didnt work.
Now you can check 2 things :
1. Try re-inserting the RAM (memory modules) - do this first.
2. Bios battery. It is a button type battery located inside your laptop. Replace it with new one.
If this doesnt work, than your motherboard or ram (and maybe display too) is damaged. You need to get it repaired or replaced. I would suggest you to take quotes from few places because sometimes replacement is cheaper than repair.
If they suggest you to replace it. Then you can buy it Online and replace it on your own. Search for a repair manual online.
If its under warranty, contact Acer customer support for free repair.
In anycase do not spend more than $150 in getting it repaired because it will be a better investment to buy new laptop as computer prices are at all time low.
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