id summary reporter owner description type status component version resolution keywords cc guest host 5382 Virtual Box Host Net Adapter cause a 9F error blue screen Cooperdale "Hello, I'm on a W7 64 bit machine and I usually disable Vbox host-only ethernet adapter because I don't need it. I forgot to do so after installing the latest version, and this morning I found my pc with a blue screen. Checking the logs I found out the blue screen happened while entering standby mode. It was a 9F error, Driver Power State Failure. It looks like a driver wasn't able to switch itself off for standby mode. Debugging memory.dmp and the related minidump file tells me this: Probably caused by : VBoxNetAdp.sys It never happened before, and my pc entered standby at least 10 times after installing 3.0.10, so it may be a very rare or one-off problem, but I thought it was worth mentioning anyway, since you do such great work on supporting and developing this software. Thanks, Daniele" defect closed network VirtualBox 3.0.10 obsolete other Windows