Details: Intel Core I3-2367, 4GB, Windows 8.1 - Asus Zenbook
Issue: Working along (web surf, excel) then laptop screen suddenly goes black. Laptop still running. Hard reboot (long press). On restart - still black laptop screen.
Actions Taken and Results:
Action 1) Connect laptop to external monitor via HDMI and reboot (Standard Startup)
Result 1) Windows logo and spinning dots now visible. After a few seconds no signal to external monitor (timeout). Monitor goes to sleep.
Action 2) Windows Diagnostics - Advanced Options - Startup Repair
Result 2) No Issues found.
Action 3) Boot into safe mode via Windows Diagnostics - Advanced Options - Startup Settings using external monitor via HDMI
Result 3) Safe Mode boot successful (for all below actions assume in safe mode)
Action 4) Attempt - System Configuration - Diagnostic Startup (standard reboot with all Startup Items disabled - "basic devices and services only")
Result 4) same issue as before (Windows logo and spinning dots)
Action 5) Attempt - System Restore
Result 5) No restore points
Action 6) SFC/Scannow from command prompt (admin)
Result 6) Complete. No integrity violations found.
Action 7) Chkdsk /r on drives
Result 7) Complete. No problems found.
Action 8) Device Manager
Result 8) 3 devices with yellow alert icons
A) Generic PnP Monitor (status is not available for this device when Windows is running in safe mode)
B ) IWD Bus Enumerator (The drivers for this device are not installed)
C) USB 2.0 - CRW (The drivers for this device are not installed) - strange because all USB ports are working
Action 9) Event Viewer / Logs
Result 9) Only significant (error/warning/critical) events (as far as I can tell) around the time of the monitor going black (not necessarily related) are...
A) Warning: Volume C: Requires an Online Scan. An Online Scan will automatically run as part of the next scheduled maintenance task.
B ) Error: A corruption was discovered in the file system structure on volume C: The exact nature of the corruption is unknown. The file system structures need to be scanned online.
C) Warning: The driver WudfRd failed to load for the device ACPI
1) What is the likely cause of the laptop monitor (black screen) failure?
2) What is the likely cause of the standard boot failure?
3) Does (chkdsk /r) cover the functionality of an "Online Scan" (and more)?
(/scan) NTFS only: Runs a online scan on the volume
(/offlinescanandfix) Runs an offline scan and fix on the volume.
(/R) Locates bad sectors and recovers readable information
(implies /F, when /scan not specified).
4) How do I fix the above laptop monitor (black screen) and standard boot failures?
Edited by duckworth, 28 February 2017 - 04:50 PM.