How does the problem manifest: svchost.exe uses 100% of one core Restart of system hangs (putting the system into standby and resuming it resolves the hang) How did I debug it: 1. Process Explorer (hxxp://technet.microsoft.com/en-us/sysinternals/bb896653.aspx) to identify process and thread id 2. Start Visual Studio 3. Attach debugger to process with the process id from 1 4. Break all 5. Load symbols from MS symbol server 6. Select the thread with the thread id from 1 7. The last function in the stack trace is something like GetProcessSnapShot Solution: 1. Go to services 2. Change the startup value of the Superfetch service to Manual 3. Reboot