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I need to disable tha acpi on an acer travelmate 529tx but i don't know how to do it. i am trying to install xp after a failure. i get bsod and says to press f7 when i install storage drivers but i need a walkthrough of how to do it please. Darryl Tunnicliffe

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I have seen on many forums that ACPI makes a lot of troubles to a lot of users under Windows. I will try to explain several things about ACPI and I hope that you will be able to solve your problems after you read this article. I cover only most encountered issues, but always there is a choice even if it's called ACPI disable.:)
The computer ACPI support is detected in the setup stage, but there are less frequent cases when ACPI is not detected and the Standard PC HAL is installed. If you want to force the installation of the ACPI HAL:
1. At the blue screen of the Windows XP setup when it prompts you to press F6 for additional mass storage devices press F5 and you will have a list of options.
2. Choose the proper HAL for your machine remembering that there are also different HALs for multiprocessor machines.
3. Complete the setup, go to Setup / Control Panel / System / Hardware / Device Manager / Computer. If you have listed the Advanced configuration and Power Management (ACPI) the process was completed successfully.
Warning: You can do the same thing if you don't want to install ACPI and your BIOS doesn't support ACPI disable setting. Just choose the Standard Computer HAL from the list of options.
Another method to disable ACPI is:

  • wait for the text-phase of XP setup to complete
  • before XP Setup Wizard to load, boot into DOS and change ACPIEnable = 0 from ACPIEnable = 1 in file c:\txtsetup.sif
The reason why ACPI is not installed on a computer with known ACPI compatibility may be a Microsoft known subtle incompatibility which can lead to hardware instability. In the installation step Windows XP checks the BIOS compatibility with ACPI and the BIOS presence on a known bad list. If the BIOS is there ACPI is not installed. Of course than errors can occur so you can force the ACPI installation (not recommended).

Try disabling it in the BIOS first, this can not be done on a computer with the operating system already installed as it will cause the machine to stop. MUST be done when you initially install the OPERATING SYSTEM.
Regards.

Posted on Nov 16, 2008

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2. When Setup starts again, press F7 when you see the "Press F6 if you need to install a third-party SCSI or RAID driver" screen.
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