Right-click that registry key, select New... and create a DWORD (32-bit) Value named CrashOnCtrlScroll, with a value of 1.
Close Registry Editor.
Click the Start button, right-click Computer and select Properties. Click Advanced System Settings.
In the Performance area, click the Settings... button.
In the Performance Options window, navigate to the Advanced tab, then click the Change... button.
Click the Custom size radio button, then set both Initial size (MB) and Maximum size (MB) to at least the amount of system memory + 257 MB, by entering the correct value in each field and clicking the Set button when done. E.g. if the system has 4 GB of memory, set both fields to (4 x 1024) + 257 = 4353 MB. If the system has 8 GB of memory, set both fields to (8 x 1024) + 257 = 8449 MB.
Reboot the system to effectuate the changes.
Reproduce the issue and generate a complete memory dump by holding down the right Ctrl key and pressing the Scroll Lock key twice.