If you have a Windows blue screen error 0x0000007E, you may be able to gain some basic information on the code alone. For additional information, refer to the Microsoft Support Article: Operating system intermittently crashes with a "0x0000007E" Stop error message on a computer that is running Windows 7 or Windows Server 2008 R2. Troubleshooting from the Microsoft support site is re-published here for your convenience:
- Note the file name of the .sys file at the bottom of the Stop message block. For example look for something like WUSB54GCx86.sys . Research that file name.
- If the .sys file does not help with a direction, use the "advanced" troubleshooting steps.
- Boot into the recovery console (DVD) and make sure there is enough free space on the disk. Delete temp files, and other files to make space.
- Update the Server BIOS, Chipset etc.
- Remove any unsigned Drivers. remove the driver if it is being referenced in the stop code.
- Update the other drivers like video drivers or use the default Windows video driver.
- Check any hardware against the Hardware Compatibility Matrix from the Microsoft web site for any discrepancies.
- Remove third party drivers that may be causing the error from %Windir%\System32\Drivers
- Review any Hotfixes like one for Windows Server 2008 R2 (See: Above reference).
- If you have Hyper-V installed there may be a Hotfix available. For a specific example, refer to Microsoft Support Article: You receive a "Stop 0x0000007E" error on the first restart after you enable Hyper-V on a Windows Server 2008 R2-based computer.
- Review Microsoft Community Article: Blue Screen. The bugcheck was: 0x0000007e (0xffffffffc0000005, 0xfffff88006b252c7, 0xfffff880035cb4d8, 0xfffff880035cad30) to confirm the above troubleshooting steps as well as to read further commentary.
To isolate the cause, run PSA/ePSA diagnostics.
For detailed instructions on running PSA/ePSA diagnostics, refer to Dell Knowledge Base Article: Run Built-In Diagnostics for Your System
- If diagnostics fail, access the Dell Interactive Support Agent and search the error codes to determine which part is causing the error.
- If diagnostics pass, identify when the Windows Blue Screen occurs.
- Pre-boot: To determine a faulty part, isolate the memory by connecting 1 module at a time, and isolate the hard disk by connecting a known good hard disk to the system until the faulty part is discovered.
- Pre-logon: Boot into Safe Mode and disable all Startup entries. Isolate 1 Startup entry at a time until you find the causing agent.
- Intermittent / post logon: Collect the minidump files by navigating to C:\windows\minidump and analyzing the minidump files using a tool called BlueScreenView developed by Nirsoft. You can also use Windbg and use the link to Dell.com to set up the debug. Identify the causing agent and reinstall the appropriate driver or application. If the issue still persists, it may be necessary to perform a windows reinstallation.