After Stop 0x124 bug check, WHEA events are not added to the system event log

As a workaround for this issue, the number of buffers used by the ETW infrastructure can be increased to handle the additional load. This can be done by modifying the MaximumBuffers value for the Windows Diagnostic Infrastructure (WDI) autologger in the registry.

Warning: Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

To increase the buffers available to the DiagLog on Windows Server 2008 R2, follow these steps:

1. Start Registry Editor. To do this, click Start, click Run, type Regedit , and then press ENTER. 
2. Locate and then click following registry subkey:
   HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\WMI\Autologger\DiagLog
3. Locate the MaximumBuffers registry value.
   If the registry value is not present, follow these steps to create it: 
   a. Select the registry subkey that is listed in step 2. 
   b. On the Edit menu, point to New, and then click DWORD Value.
   c. Type MaximumBuffers, and then press ENTER.
4. Set the DWORD value to 0x100 in hexadecimal (which is 256 in decimal). To do this, click Modify on the Edit menu, and in the Value data box, type 100, make sure Hexadecimal is selected under Base, and then click OK.
5. Exit Registry Editor, and then restart the computer.