Where is the CMOS battery on the Acer 4520 Aspire? Can it be removed?

I have an Acer 4520 that is BIOS protected and the only home remedy I can find is to possibly remove the CMOS battery for a few minutes. I can find no information on where this battery is located and how it might be removed. The alternative is to send the laptop in to Acer, and pay $100.

I wouldn't mind that so much, but I've been given concerns that the hard drive could be locked, too, and that after the $125 unlock, I'd have to buy a new hard drive as well. Help! Asked by ibstubro 26 months ago Similar questions: CMOS battery Acer 4520 Aspire removed Computers > Hardware > Desktops & Laptops.

Similar questions: CMOS battery Acer 4520 Aspire removed.

Inside the computer and soldered to the motherboard… The CMOS battery on this model of laptop (as well as most laptops) is not user-serviceable and, as such, is not easily accessible. With most Acer (and other cheaper) laptops, they are soldered into place, partly out of laziness by the manufacturers to design proper battery sockets but also in an attempt to discourage end-users from trying to fix their own machines. As such, the only way to pull the battery would be to disassemble the machine, desolder the battery, and then reverse the process.

This is not something for the timid or the average soldering iron. To work on circuit boards, one must use a low-wattage iron or else he will burn the circuit board, requiring replacement of the board as a whole. My professional advice to you is to send the machine in to Acer's repair center to have the password removed.

They have the software that will accomplish that for you without any danger to your hardware. As for the possibility of the hard drive being locked, be aware that we are talking about a low-end Acer laptop here, not something utilized by the Pentagon. Thus, this is not truly a concern.

What's more, the only type of security that would exist on the hard drive would be circumvented by reformatting and reinstalling Windows and anything else you have on there. I hope this information helps. Let me know if I can answer any other questions for you.

Sources: 22 years of experience as a computer technician and 20 years of experience owning a computer sales and services business .

1 I have a 4520 apart in front of me now and the battery is not soldered it is in a clip type socket and pops out with a little up pressure. You have remove the entire top of the laptop to access it as it under the keyboard under the frame bezel and its not something for the faint of heart as I am starting to regret getting this far. My current problem is in removing the bezel I pulled the two power wires loose a black one and a white one and I need skem for a PN DA0Z03MB6E0 motherboard .

I have a 4520 apart in front of me now and the battery is not soldered it is in a clip type socket and pops out with a little up pressure. You have remove the entire top of the laptop to access it as it under the keyboard under the frame bezel and its not something for the faint of heart as I am starting to regret getting this far. My current problem is in removing the bezel I pulled the two power wires loose a black one and a white one and I need skem for a PN DA0Z03MB6E0 motherboard.

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