06-30-2017 02:48 PM
I am trying to boot to a USB on an Elitebook 840 G4. When I press the power button, it almost immediatley freezes at the Logo screen during boot up. Nothing works Esc,F10,F9, etc. (I begin pressing as soon as I turn it on)
I then have to unplug everything, remove the back, remove the battery and disconnect the BIOS battery. I then re-connect the power supply and enter setup (F10). I have tried resetting BIOS to factory, disabling Secure boot, changing Sure Start to manual.
After each try I reconnect the System battery, then reinstall the Laptop battery and replace the cover. I then restart, log onto the laptop ok. However, when I shut down again I am right back where I started and it freezes at the "HP Protected by HP Sure Start logo." I have been through the same process about 4 times now. Any suggestions?