I've been trying to fix a DRIVER_POWER_STATE_FAILURE (0x9F) blue screen for about two months. The computer was working normally when I left town in late June, but when I returned on July 5, the crashes had started. System Restore fails every time. Windows starts normally for only three to five minutes before crashing, but Safe Mode and selective startup remain stable. The computer cannot connect to the internet without eventually blue-screening, and the crash seems to occur when network activity begins. I have uploaded the latest minidump files for analysis. What driver or hardware checks should I try to identify the cause?
3 Answers
Check the drive’s health as well, if you can keep Windows running long enough. A tool such as CrystalDiskInfo can show whether the system drive is reporting warnings or failing sectors. Storage problems can sometimes make driver-related crashes harder to diagnose, although the network-related pattern points more strongly toward a network driver or adapter issue.
A 0x9F error usually means a driver is getting stuck during a power-state change. Since the system stays stable without networking, the network adapter driver is a strong suspect. In Safe Mode or selective startup, remove or roll back the Wi-Fi/Ethernet driver, then install a fresh driver downloaded from the computer or motherboard manufacturer rather than relying on Windows Update. Also disable power saving for the adapter in Device Manager and test again.
The crash does not sound like it was triggered by graphics-heavy work. The timing with network activity is more useful than the gaming history here. Start by testing the network adapter and its power-management settings, and inspect the minidumps with a debugger to see whether a specific driver is named.
I wasn’t running any graphics-intensive task when this began. The computer is used for regular work and some gaming, but it was left running while I was away. The blue screen consistently appears after network activity starts.
I’ll run a drive-health check as soon as I can get the system up long enough.