Question about Acer Veriton M460 Micro Tower Core 2 DUO E4500 2.2GHz Dvdr GigaBit Ethernet Wvb VM460UD4501 PC Desktop

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Strange message saying "Warning! Your chassis has been opened!"

This is a new PC - only 3 weeks old. Last night I plugged in some headphones for the first time. A screen came up asking for a password to do this. I thought this weird but carried on anyway. Then a green Acer came up that I didn't understand at all so I clicked it off. Everything was fine. I switched the PC off. Later switched it back on and a black screen came up with loads of gobbledegook on it and a final message at the bottom saying "Warning! Your chassis has been opened!" I never touched it! Nothing has been opened. We telephoned Acer who didn't seem to be able to help (what he was indicating should be on the screen wasn't) and accused us of opening the chassis. My husband fiddled around later and came across a screen which asked if we wanted to save recent changes. He indicated no and up came the sign on screen. We signed on and away we went. However, the sign on screen now appears to indicate that there is more than one user on the PC which is not the case as my husband and I use the same sign-in. The PC is OK as long as we keep it in sleep mode but if we turn it off, we have the same screen come back up saying about the chassis so he has to go through the process of trying to sort it out. Anyone out there any ideas except for sending it back as suggested by the Acer guy?

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  • vivversis Feb 06, 2009

    Thanks so much for your time. I suspected we might have to return it but was really hoping not to have to, since we've spent so much time downloading all our stuff to it and finally getting on broadband. Time to box it up then.....................

  • vivversis Feb 07, 2009

    Thanks again

  • BODUNK May 04, 2009

    I CONTACTED ACER AND THEY SAID I NEED TO CLOSE MY DESTOP CHASSIS. I DONT KNOW WHAT THAT IS.

  • Anonymous May 21, 2009

    Warning! Your chassis has been opened

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  1. Hit DEL when booting to get into the BIOS
  2. Choose PC Health function
  3. The first item is the chassis open function - hit Enter to change it to Clear.
  4. F10 to exit and save the change
  5. Reboot
  6. GO into the BIOS again and this time select Disable for the chassis opened function
  7. F10 to save and exit
  8. Done.

Posted on Oct 13, 2009

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I had the same problem with an Acer desktop after I upgraded the Ram, and I tried everything including resetting the bios. I finally solve it by entering the bios and Loading the Optimal Defaults and then saving it with F10. I have not had any chassis intrution message since then

Posted on Oct 07, 2009

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It sound to me like there is an issue with the BIOS.

This can be caused by

1. Corrupt BIOS (resolve by updating BIOS from Acer - but there is not one on the download page)

2. Loose CMOS battery (You would need to pop it open to reseat it)

3. Bad motherboard - have it serviced (warranty) or return it and buy a new one (the Acer guy seems to suspect this, and i would take the opportunity to return it if still possible)

just my $0.02

Posted on Feb 04, 2009

  • Ron
    Ron Feb 06, 2009

    You could use the built in Easy File and Transfer wizard to save your settings, and move your files. You would still need to install any programs that you've installed. (you can save on external drive, network, or optical drive)

    Here is Microsoft site that discusses how to do this. (It does not always work as nicely as they say, but it can be a timesaver when it does).

    Too bad about the time spent, most failures happen (any brand) early in the life of the computer when there are faulty parts. If it was anything other than the mainboard, it might be worthwhile replacing the defective part. Better to replace it now, then to deal with it when the warranty expires.

    I hope you have better luck with the new computer.


  • Ron
    Ron Feb 06, 2009

    Here the Easy Transfer web page I forgot to add

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