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Boot up error showing "chassis has been opened"

My boyfriend opened our day-old PC (Acer Veriton M464) to upgrade the sound card. Now each time the PC boots up this warning comes up. He found that pressing F1 allows normal loading to continue but each time the PC is switched on or restarted it happens again. Everything else is working perfectly. Is there any way to stop this permanently?

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  • gcooney179 Apr 01, 2009

    I have the same problem but cant find the disable chassis stuff in the BIOS - i've looked EVERYWHERE!!

  • hate compute Apr 02, 2009

    Same problem, but onboard I/O setup has no "chassis opened warning" option.

  • gcooney179 May 11, 2010

    I've tried all of this - still cant see the disabling bit in the BIOS - and I've been into EVERY section!

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Here is the solution. I had the same problem.
Chassis Warning
"Warning your chassis has been opened. Press F1 to continue. Press Del to enter setup menu."
Resolution
Enter Bios
Goto Intergrated Peripherals
Goto Onboard I/O setup
Find "Chassis Opened warning"
Set to “Disable”
Press F10 to save and exit changes
That all there is too it.

Posted on Mar 06, 2009

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In the BIOS go to the BIOS Security Features section and either dissable or clear the warning for Chassis opening - just worked on this machine

Posted on Aug 28, 2010

  • Rajakumar
    Rajakumar Dec 29, 2013

    Thanks it was working me

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Press Del Goto PC health status and just enabled the Reset Case Open Status

Posted on Sep 25, 2009

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Simply go into the BIOS and hit return to factory default, that’s it. Hit save and reboot..

Posted on Nov 03, 2009

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Follow what SteveS1013 said but go to the PC Health Status screen instead.

That should help.

Posted on Jul 23, 2009

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Go to bios security then disable "open case"

Posted on Jun 05, 2012

  • abbonani
    abbonani Jun 05, 2012

    go to bios security then disable "open case"

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I had the same problem, if however pressing del or f1 doesn't get you into the bios you may need to clear the nvram. To do this just open the cover again, find the battery on the motherboard, there should be a jumper beside it thats on 2 of 3 pins, move it to the other 2 and power on. It should come up with the same error but this time del or f1 will get you into the bios. From there just go and clear/disable the sensor and save. power off the machine and put the jumper back in it's original position and close your case. You can then power on as normal.

Posted on Nov 10, 2012

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Easy Solution go to PC Health and. DISABLE PC Health Save and exit

Posted on Jul 11, 2010

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Same here - I'm fed up with it!

Posted on Dec 30, 2009

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I had the same problem, but going to PC HEalth and clearing did not work. DISABLE also did not work. However, RESET did work. Thanks

Posted on Dec 08, 2009

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Take note of stevoS1013 directions and instead of using integrated peripherals.. use the pc health screen as rock014 said and choose the option "clear". This should solve your problem.

Posted on Jul 24, 2009

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I can'i see the Onboard I/O setup

Posted on Nov 11, 2011

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I selected "clear" from the PC Health Screen within BIOS and it did the trick

Posted on Apr 06, 2015

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In addition to SteveS1013's solution you can also use "Clear" option, in the future you will get the notification again. Could be handy if "somebody else" has opened ur computer.

Posted on Jul 25, 2009

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I've tried it also, no option to turn off warning in the Bios..

Posted on Jun 25, 2009

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Either the PC case has not been closed properly, thereby not closing the "open case" switch, or you can disable the "open case" detection in the BIOS. To enter the BIOS, press Del when the PC starts up. If Del doesn't work, try pressing F2 or F10 when the computer starts.

Posted on Nov 30, 2008

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