Trigger a BSOD on Hyper-V Virtual Machine using CrashonCtrlScroll

Question

Hi All,
I need to trigger a Memory Check on a VM running under Hyper-V 2012 R1. Using "http://msdn.microsoft.com/en-us/library/ff545499.aspx" as a guide a I have tried using the standard
Right CTRL + Scroll Lock + Scroll Lock as well as alternate keys, e.g. Left and Right ALT keys etc.
Unfortunately I can't seem to trigger the Memory Check.
Has anyone else attempted to do this?
Essentially I am troublehshooting an issues ehere the vendor needs a complete memory dump to work out what is loaded at the time the issue occurs.
Any help would be great.
NSutton

Answer 1

Hi Nathan,
If the specified VM is Generation 2 virtual machine running on a Windows Server 2012 Hyper-V host, you'll need instead to create the CrashOnCtrlScroll registry key in the guest operating system in this location:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\hyperkbd\Parameters
Either way be sure to reboot the guest operating system of your virtual machine once you have made any of the above registry changes so they can take effect.
If your virtual machine is running Windows Server 2012 R2, you can use the new Debug-VM cmdlet of Windows PowerShell to bugcheck the virtual machine and generate a dump file. This cmdlet injects a non-maskable interrupt (NMI) into the guest operating system
virtual machine which results in a bugcheck of the operating system. For the syntax and examples of using this cmdlet, see
http://technet.microsoft.com/en-us/library/dn464280.aspx.
Please let me know if this helps
Thanks,
Pankaj Joshi
pankaj(MCT)