Windows 8 Unclean Shutdown At 3am Every Night← Back
My Windows 8 desktop suddenly began shutting down uncleanly every night around 3am. There were no event logs to indicate any error and I was able to install Windows updates without a problem.
Windows 8 runs nightly system maintenance at 3am if the PC is switched on. By accident, I discovered that one of the SATA cables was not securely connected to one of my hard drives. I discovered this after having to install another drive to perform some recovery which required that I remove the drive that was causing the problem. Once I had reinstalled the drive and reconnected the cable, I did not experience any further unexpected reboots.