Disable power on after power loss

biospower

I have an HP PC, that is running Windows. After a power loss, the computer turns back on, and I want to disable it.

I tried the BIOS, and the setting of "After Power Loss" is already Off (see image). I also tried changing that setting to On but that still made the computer turn on after a power loss.

enter image description here

How can I set my computer to not automatically power on after a power loss?

EDIT:

  • BIOS updated to latest version
    • Boot after power loss: Off
    • Network boot: Off
  • Replaced the CMOS battery
  • Tested even with no USB devices, just VGA and Power

Testing fashion: Turn on, pull the power cord, plug the power cord. Wait 2 seconds, then it boots again.

Still no luck.

Edit 2

If I unplug while running, then wait 5 minutes, then plug again, it does not boot until I press the boot button. What is going on?

Best Answer

Option #1:

In your bios you should have a 'power on by RTC' and 'Power on by pcie', have you tried disabling those? I believe they should be disabled by default.

Option #2:

Install and Configure a UPS Software

Step 1: Install PowerChute or similar software.

Step 2: Navigate to the Energy Management tab or similar within the Configuration setting.

Step 3: Check the Enable Energy Management checkbox and choose the Default settings in PowerChute. Look for any "Turn On Again" settings in any other power management software and check/uncheck as appropriate.

Option #3:

enter image description here

enter image description here

Option #4:

The .reg files below are for the registry key and value below.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CrashControl

AutoReboot DWORD

0 = Disable
1 = Enable

Option #5:

In command prompt enter the following:

wmic recoveros set AutoReboot = False
Related Question