Question about Acer Aspire 7520-5185 Laptop

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My acer 7520 wont even run bios check it just power on then off and so on sometimes at random it will load and work fine for random amounts of time then just power off and then it back to on off on off any ideas

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  • matt Sep 16, 2009

    nope didnt work ty anyway still need advice

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Pls try to replace the RAMs ..bcoz some times RAM causes same problem ...

Posted on Sep 09, 2009

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Can you remove cmos from acer aspire 7520


Cmos is located in BIOS


CMOS is an on-board semiconductor chip powered by a CMOS battery inside computers that stores information such as the system time and date and the system hardware settings for your computer..

if you remove the cmos your computer might/will not run

if you have changed or need to reset your cmos

During the boot process you will see on the screen to press a certain key to enter setup Press and hold that key during the boot up process to enter BIOS
using the arrow keys you can load failsafe or optimised defaults
after you make any changes in BIOS press Esc then press the F10 button save to cmos to restart

hope this helps you

Oct 30, 2011 | Acer (ACERMOTHERBOARD)

1 Answer

My laptop battery i guess hit critical stage but now the system wont work with ac power


DC connector problem:

Symptoms of a broken power jack
1. If you wiggle the power cord or the AC Adapter connector on the back of the laptop, the power LED and battery charge LED start to flicker.
2. Battery will not charge in the laptop.
3. Laptop runs fine off a charged battery.
4. With the AC Adapter connected the laptop appears to be dead.
No power LED or battery charge LED activity.
5. Laptop randomly powers off without any warning.

If your laptop is out of warranty, then you can fix the problem by re-soldering DC-IN jack on the system board. If it

Jan 26, 2011 | Acer Aspire 7520-5185 Laptop

2 Answers

I tried to install windows 7 and now my Acer Aspire 7520 won't boot, just get a black screen, the Acer Logo shows for a few seconds and I can then hit f2 but no other f keys work and the disc drive won't...


maybe u can enter bios system first by press F10/DEL/F12,,,try reconfigure booting 1st place with ur internal CD/DVD Rom...and then save setting and restart your Laptop

Jan 15, 2010 | Acer Aspire 7520-5185 Laptop

3 Answers

Acer Aspire 7520 black screen wont boot


Turn off notebook. Remove the battery. Press Power button. Notebook should start working. Wait for 15 secs. If the screen still blank press Power button and hold it for approx. 4 seconds until notebook is powered off. Then press power button again. Bingo, problem should be solved.

Dec 19, 2009 | Acer Aspire 7520-5185 Laptop

2 Answers

My acer aspire 7520-5757 laptop wont boot into windows or bios


1or 2 things mother board batterys is dead or mother board is c`racked or whole ac plug in the back is shot

Nov 05, 2009 | Acer Aspire 7520-5757 Notebook

1 Answer

Bios password


You will need the BIOS password to enter the BIOS setup.
To do a hardware reset remove the CMOS batteries for 30 minutes. Once your BIOS password is removed, you will need to press the <F2> key during POST (Power On Self Test) to enter the Acer BIOS setup.
After you enter BIOS, go to the Boot tab and down to "Security" and make your changes there.
If you need help with the default password, please re-post your request.
Thanks and good luck.

Mar 19, 2009 | Aspire Acer 7520-5324 Laptop

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