Stack buffer overflow

I received a faulting application name: svchostxece_WpnUserService and Faulting module name:QuietHours.dll. Exception code 0xc0000409.

Faulting application path: C:\WINDOWS\system32\svchost.exe
Faulting module path: C:\Windows\System32\QuietHours.dll

Was this a BoF attempt or why did my computer go BSOD and give some timeout clock error and it would not do anything until hard shutdown?