Having problems with your Acer Aspire 5520-5908 Notebook ?

I was playing with the "mouse" & a message came up "locking computer". The battery light is blinking on & off but no power light (green) is on, I have tried pressing on-off switch , powers uo for 30 seconds then shuts down. My computer is Aspire 5520G


Answers :

Hello !

Sounds like you have a boot password enabled. You didn't note that the system was asking for a password, tho.

For a boot password issue, power off, disconnect all cables, remove the battery and the bottom of the laptop. Look for a small, round silver battery (the CMOS battery) and remove it for 5 minutes. Reinsert and hopefully that will resolve your issue.


You did not mention if you have video signal when you turn the laptop on (even for 30 seconds). If you have video signal, check your adapter with a multimeter or use a previously checked adapter with your portable. If the AC adapter is bad it cannot sustain the power needs of your laptop or to charge the battery properly. So, your laptop turns off by itself (but you have video signal).
\015\012If you do not have video signal :
\015\012- remove the battery and plug the laptop. If there is no activity when you push on the power button (not even for a second) your motherboard is defective : it could be only the power jack, but it could be a bigger problem also.
\015\012- if it starts for a few seconds (but no video signal ) and then turn off by itself, there is a small chance to be a memory problem; check the memory as it follows:
\015\012- if you have 2 memory modules use only one at a time, the other one could be defective or
- check your memory with another laptop or
- use some known good memory etc.

\015\012If there is no activity with good memory that means the motherboard is defective (the power jack or something else). Could be expensive to be repaired or replaced. Verify if the laptop is in warranty and have it checked by a professional.
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