Dell OptiPlex SX270 PC Desktop Logo
Anonymous Posted on Mar 10, 2010

Error while trying to install windows xp Stop: 0x0000007B on a dell Optiplex sx270

  • Anonymous Jul 10, 2010

    Hardware failure was the cause for this error, but thanks for your
    suggestions.

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2 Answers

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  • Posted on Mar 10, 2010
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The most popular Blue Screen of Death error in Windows is the STOP 0x0000007B error, sometimes called the 0x7b error or the "INACCESSIBLE BOOT DEVICE" BSOD.
This BSOD (which is actually the common name for a STOP Error) could mean that there's a serious hardware problem with a hard drive controller, a driver issue, or even a boot sector virus.
In your case though, this is most likely one of 4 capacitors that are known to blow out on any SX270. Slide the bar at the back of your PC to the remove cover side and look inside for swollen caps. Remove the fans and cpu cover as well and check around there. Replace any bad ones you can find with old caps borrowed from an old motherboard if you have one, or new ones from any decent electronics parts warehouse. This fix has worked for me on every SX270 I have ever had.

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  • Expert 53 Answers
  • Posted on Jul 10, 2010
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0x0000007B Blue Screen Errors in Windows XP

Some Dell computers ship with both ATA and AHCI support. Both are methods for communicating with the hard drive. AHCI has benefits above standard ATA mode that increase performance. Microsoft® Windows® XP does not support AHCI mode by default, which causes the STOP 0x0000007B error message if AHCI mode is enabled before the AHCI driver is installed.
To resolve this error, disable AHCI mode (by changing the SATA Operation setting in the System Setup), and then install the chipset driver. When the chipset driver is installed, you can enable AHCI mode.


Change the SATA Operation Setting From RAID Autodetect / AHCI to RAID Autodetect / ATA in System Setup
1. Restart the computer.
2. Press <F2> immediately after the keyboard LEDs flash to enter the BIOS (System Setup).
3. In the System Setup screen, press <Up Arrow> or <Down Arrow> to highlight the Drives section, and then press <Enter>.
4. Press the <Up Arrow> or <Down Arrow> to highlight the SATA Operation section, and then press <Enter>.
5. Press the <Up Arrow> or <Down Arrow> to highlight RAID Autodetect / ATA, and then press <Enter>.
6. Press <Esc> to exit the System Setup.
7. Press <Up Arrow> or <Down Arrow> to highlight Save/Exit, and then press <Enter>. The computer restarts.

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Encountering the Error STOP 0x0000007B when Installing Windows XP on Optiplex gx270. Error occurs when Setup starts loading Windows Setup Files.

That error is a boot device error and you need to check the BIOS to see what is listed for hard drives and other devices and see if AHCI is enabled etc.
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Stop:0x0000007b

Hi Jefferson,
  1. Did you just install or make a change to a hard drive controller? If so, there's a good chance that the change you made caused the STOP 0x0000007B error.

    Undo the change and test for the 0x7B blue screen error.

    Depending on what changes you made, some solutions might include:

  2. Verify that the SCSI chain is correctly terminated, assuming you're using SCSI hard drives in your computer. Incorrect SCSI termination has been known to cause STOP 0x0000007B errors.

    Note: Most home computers don't utilize SCSI hard drives.
  3. Verify that the hard drive is properly installed. An improperly installed hard drive could cause STOP 0x0000007B errors and other issues.
  4. Verify that the hard drive is configured properly in BIOS. The STOP 0x0000007B error could occur if the hard drive settings in BIOS are incorrect.
  5. Scan your computer for viruses. Certain viruses that infect the master boot record (MBR) or boot sector can cause STOP 0x0000007B errors.

    Important: Make sure your virus scanning software is updated and configured to scan the MBR and boot sector.
  6. Update the drivers for your hard drive controller. If the drivers to your hard drive controller are outdated, incorrect, or corrupted then the STOP 0x0000007B error will likely occur.

    Note: If the STOP 0x0000007B error occurs during the Windows setup process and you suspect that the reason is driver related, be sure to install the latest hard drive controller driver from the manufacturer for use during the installation of the operating system.

    Note: This is a likely solution if the second hexadecimal number after the STOP code is 0xC0000034.
  7. Change the SATA mode in BIOS to IDE mode. Disabling some of the advanced features of SATA drives in BIOS could stop the STOP 0x0000007B error from showing up, especially if you're seeing it in Windows XP or during a Windows XP installation.

    Note: Depending on your BIOS make and version, SATA mode may be referred to as AHCI mode and IDE mode may be referred to as either Legacy, ATA, or Compatibility Mode.

    Note: While not a common solution, you may also want to try the reverse - see if IDE mode is selected in BIOS and if so change it to AHCI, especially if you see the STOP 0x0000007B error in Windows 8, Windows 7, or Windows Vista.
  8. Run chkdsk on your hard drive. If the boot volume is corrupted, the chkdsk command might repair the corruption.

    Important: You'll likely have to run chkdsk from the Recovery Console.

    Note: This will likely be the solution if the second hexadecimal number after the STOP code is 0xC0000032.
  9. Perform an extensive test of your hard drive. If your hard drive has a physical problem, one very likely situation is the STOP 0x0000007B error you're seeing.

    Replace the hard drive if the diagnostics you complete suggest that there is a hardware problem with the drive.
  10. Run the fixmbr command to create a new master boot record. A corrupted master boot record might be causing your STOP 0x0000007B error.

    Note: This will likely be the solution if the second hexadecimal number after the STOP code is 0xC000000E.
  11. Clear the CMOS. Sometimes the STOP 0x0000007B error is caused by a BIOS memory issue. Clearing the CMOS could solve that problem.
  12. Update your BIOS. In some situations, an outdated BIOS could cause a STOP 0x0000007B error due to incompatibilities with a hard drive controller.
  13. Update the hard drive controller's firmware if possible. Just as with the BIOS in the previous step, an incompatibility could be causing the 0x7B error and a firmware update from the manufacturer may correct the problem.
  14. Repair your Windows installation. If you've just replaced the motherboard in a computer without reinstalling Windows then this will likely fix your problem.

    Note: Sometimes a Windows repair will not fix a STOP 0x0000007B error. In those cases, a clean installation of Windows should do the trick.

    If you haven't just replaced your motherboard, a Windows reinstall probably will not fix your STOP 0x7B issue.
Hope this helps,
If you need further assistance please get back in touch and i'll see what else we can do.

Thanks,
Gary
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What does "RUNDLL Error loading newdev.dll" and

newdev.dll is the Windows file that is responsible with the recognition of the hardware and the loading of the drivers - an absolutely critical file. This file is severely corrupted and the only way to fix that is to perform a Repair install.
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Dell optiplex sx270: loud, steady noise like an alarm a few seconds after I turn on the PC

You can check the meanings of the error beep codes HERE. Every beep code means something different. The bad thing is that the code I think you are speaking of is a fatal error.

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Re-installed windows xp on dell optiplex SX270 and i've no sound

Begin by checking device manager. If there is a Unknown device or PCI device listed but not properly installed you will need to identify your audio chipset and downlaod and install the correct driver. 90% of all onboard audio chipsets are AC 97' by Realtek.

If you need help in locating the drivers just post back.
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