How to automatically start on (turning computer back / power on) after power outage.

Step 1. Modify Power settings inside your BIOS.

  1. Power On your computer and press “DEL” or “F1” or “F2” or “F10” to enter BIOS (CMOS) setup utility.
    (The way to enter into BIOS Settings depends on the computer manufacturer).
  2. Inside BIOS menu, look under the following menus to find for a setting named “Restore on AC/Power Loss” or “AC Power Recovery” or “After Power Loss“.

Advanced” or “ACPI” or “Power Management Setup“. *

* Note: The “Restore on AC/Power Loss” setting can be found under different places inside BIOS setup according to computer manufacturer.

  1. Set the “Restore on AC/Power Loss” setting to “Power On”.
  2. Saveand exit from BIOS settings.

Step 2. Modify Windows to startup normally after power corruption,

In Windows 7 & Vista OS, after power failure Windows launches by default the “Startup Repair” settings instead of starting normally. But in repair mode, you can not control your PC unless you sit in front of it. To bypass this situation and to force Windows to start in normal mode after power outages or improperly shutdown, do the following:

  1. Open an elevated command prompt window by going to:
  • StartAll Programs > Accessories
  • Right-clickto “Command prompt” item and choose “Run as administrator”.
  1. In the command window, type the following command and press Enter.
  • bcdedit /set {default} bootstatuspolicy ignoreshutdownfailures

After pressing the “Enter” key, Windows should return an “Operation completed successfully” message.

  1. Close command prompt window and you ‘re done!

Attention: Always use a UPS (Uninterruptible power supply) to protect your computer hardware from voltage outages and voltage strikes. Power outages can cause serious problems on your hardware like PSU (Power Supply Unit) destruction or HDD (Hard disk) destruction (data loss).

Source : https://www.wintips.org