driver_irql_not_less_or_equal kemperdigital.sys windows 10 BSOD crash when I close the rig manager every time. How to fix this? qvibbe Apr 17th 2020 I've got the same issue using Windows 8.1.I've tried disable pretty much everything but the kemper. Factory reset for kemper. Uninstalled Rig Manager. Roled back my OS twice.Same issue.