Question about Aspire Acer 7520-5071 Notebook

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Acer Aspire 7520 turns off and on repeatedly

Each time I turn the computer on, the power button lights up and it makes the start up sounds, then promptly turns right back off.  This happens over and over again until i take out the battery or plug. The computer is an Acer Aspire 7520.  It just began doing this today.

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  • Nitrocad Dec 08, 2008

    I have the same problem, i have done a bios upgrade, but it wasn't
    useful. Im running an XP on it, and (just) sometimes it plays the same
    problem on start up. Even from sleep! I think is a hardware or bios
    problem...



    Anyone some solution?

  • Nitrocad Dec 08, 2008

    I forget some info, wenn it starts the button lights up and it makes the start up sounds, then promptly turns right back off.
    - the screen is still off, (even by wake up from sleep)
    - and sometimes if i open the DVD-RAM it will continue to starting, or waking up.

  • princessjoy Dec 25, 2008

    I have the exact same problem. How do you re-install the operating system software if it wont turn on. Or how do i repait it using an operating system cd? Where can I download that

  • Anonymous Jan 10, 2009

    If I can't get the system to turn on, how do I remove a possible virus?

  • Hoibie Jan 13, 2009

    No discription, just the same problem.

    If someone knows a solution please mail it to me:

    bjorn.h@live.nl



    I gues its something with the connector of standby it hasn't got a button to get in standby, maby it works with magnets? but don't know where they are in the laptop...



    Also tried a bios update...



    When i opened the backsite and pulled out the RAM and pushes on some chips, he go's on for doing nothing... the screen was closed and he logged in to vista :S



    Please people with solutions mail it!!

  • PCShare.Com
    PCShare.Com May 04, 2009

    Noticed few Quacks here. The problem occurs before it tries to POST. In which case, it's not a Windows problem or the battery issue.

    I haven't figured it out yet, but most likely a short in a motherboard.


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OK.To clear this up...
The problem is the nVidia BGA controller which has overheated (due to nVidia CPU overheating) and caused it to loose contact with the mainboard (dry joints).
The only way to fix this is to have the controller reseated (not cheap) or you can try doing it yourself (not recommended) by removing the motherboard and all attached items (e.g. modem/wlan/memory/cpu etc) cover it in tin foil loosly but making sure to seal all edges and heat it in the oven to around 200C for about 20mins making sure the cpu socket is facing upwards.
As I said this is not recommended as it may cause other problems but if you dont want to fork out for a new board its worth trying!!

Posted on Jun 18, 2010

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Your cmos battery is loose. The same thing is wrong with mine. If you push down hard on the middle of the keyboard and hold it down it for a few seconds it will boot into windows. I found this on another site. I havn't taken the time to see how to pop the thing open to fix the problem properly.

Posted on Apr 15, 2009

  • kados Apr 15, 2009

    http://www.cyfinity.com/2008/07/acer-asp...



    that's how to remove the keyboard, only 2 screws under the battery though.



    the cmos battery isn't the problem, unless it's shot. It's soldered in and I don't have a multimeter to see if it's charged or dead. I have a couple weeks to get this figured out, so if anyone else has a solution, PLEASE post!

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Hi. reading all this i think that i came to conclusion that it may be one of BGA chips with bad connection. Is a south bridge (responsible for operating USB's and CD drive!" on this motherboard anywhere close to the place that you push to get laptop to switch on. Maybe GPU is gone bad that gives similar symptoms. Maybe locating bad chip and reflowing solder underneath it with air gun would solve an issue. If yes what you need to do once you take your motherboard out and locate bad BGA chip get a thermometer that can measure up to 300C and place it by the side of the chip. Slowly warm the chip up with hot air gun till you reach about 200C leave it to cool down and repeat it this time getting it up to about 240C. This should allow for solder to melt under the chip and renew all of the connections. Please post your results if you get to do it.

Posted on Apr 16, 2010

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It's not the cmos problem, although pushing on the middle of the keyboard does make it start. But what you're actually pushing is the part on the motherboard where there is all the ICs that are responsible for the power coming from the AC and/or the laptop's battery. Something on the motherboard needs soldering, I haven't solved that problem yet but that's what I know so far..
Hope that helps, and please if anybody solved it email me at: andrexman1@yahoo.com

Posted on Jul 28, 2009

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Hello
it is not windows and it is not your cmos batery are you guys that stupid?
it is your processor and/or your ram realy take it out replace it with new ones put rams in your both ram slots and a new (i used turion x64)processor and let it power cycle while your calling acer support because you think it is still not solved

and
it starts wowy this was hard to find out(for the realy stupid people under us maybe)

Posted on Apr 20, 2010

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Hi,

The reason why your pc is repeating this cycle is because a file from windows is corrupt or lost causing windows not to be able to start up. This can be cause by a windows file being infected with a virus or worm and is then removed by an antivirus. You would need to Re-install your operating system software or repair it using an operating system cd.

please rate me. thank you.

Posted on Dec 03, 2008

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Solved! shaun Foster was right, pushing on the center of the keyboard solved my problem, it stops restarting and turning off each 10 seconds. my notebook was aspire7220. Now the problem is that the display doesnt work, no reaction, I know is a display problem as I conect a monitor and it displays all.

Posted on Feb 27, 2015

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@emwh I was having the same problem as reported and after trying what you posted it helped me. My daughter laptop is now working. Thank you for your post

Posted on Oct 14, 2012

  • angel31675 Sep 13, 2013

    wish one did you try?

  • angel31675 Sep 13, 2013

    which lol.

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Link.to.translate.google

Das Problem: Boot Loop
oder in einfachen Worten, wenn man startet, startet das Notebook alle 2sec neu :-\

Alle haben das selbe Problem, bei den wenigsten war noch Garantie drauf, die mit Garantie haben es eingeschickt und ein paar Wochen später war es wieder kaputt...

┌∩┐ DANKE ACER, FüR DIESEN TOLLEN SUPPORT UND DIESE GEILE PRODUKTREIHE 75xx ┌∩┐

Wir haben das Notebook geöffnet und alles überflüssige entfernt. Mit verschiedenen RAMs ausprobiert, verschiedene CPUs. Graka ist leider On-board.

Der Fehler blieb :'( Bootet nicht, startet ohne was anzuzeigen alle 2sec neu *grmbl*

Vergeblich eine konkrete Antwort zu der Batterie beim Acer Aspire 7520 oder zum CMOS resetten/flashen/kurzschließen gesucht...

Sahen uns schon gezwungen, wie Vorgeschlagen, das Notebook in den Backoffen zu schieben ;]
- Haben keinen fön da ;D -


Schließlich geklappt hat:
Auf diese "Batterie" drücken und +1min den Power Knopf gedrückt halten 8)
(netzteil und akku rausnehmen! Power drücken ist dann wohl so wie "Batterie trennen").
Notebook startet wieder^^
Keine Ahnung, was von beidem der auslöser war. Denk das mit dem Powerknopf, mal sehn wie lange er läuft xD


Eine Frage bleibt:
IST DAS DING DIE BATTERIE (steht dran "BATT1") UND KANN MAN DIE ABMACHEN/ERSETZEN/KURZSCHLIESSEN/üBERBRüCKEN???

Hier ist ein Foto von dem Batterie-Ding bei dem Acer, wie es bei normalen PCs und Notebooks ist und bei anderen Acer'n...
http://www.lupiupload.de/file.php/file/_OftKJE8qG
http://www.ld-host.de/show/7b2acf0aa8b388b0f4d054d123cdb84f.png
http://www.imgbox.de/show/img/3vQ1XcEsB1.png
* 3x selbes bild


Hoffen der Post hilft dem einen oder anderen (^_^)

greetz
priklo und mörda

Posted on Aug 06, 2011

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Hello, im a IT Tech and deal with alot of these laptops, andrex man is totally correct. A new motherboard would cost too much so i suggest you look for a good "Re-Heat" service (system board repair) to un-solder the whole board and have it all soldered back together also ... to stop this happening again make sure you clean your 7520 out every now and again as the athlon loves to over heat< or simply uograde to a turion maybe a TH33 or something avaliable due to the spec of the motherboard :)

Posted on Feb 19, 2010

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Add another one to the list- will eventually start up but without the dvdrom - loses usb ports at random - have it apart cannot see anything with motherboard. Any hardware or software scans I've done says there is nothing wrong. -- Will

Posted on Jan 07, 2010

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SOURCE: Acer Aspire 7520 turns off and on repeatedly

Mine does this but what I found was that if you hold the power button down for about 10 seconds when you are turning it on, it works.

Posted on Apr 02, 2009

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