Solved: Changed from Legacy to Secure Boot. Will not Boot and Get s... - HP Support Community

tampafldad · ‎08-25-2018

The only item I changed was the Legacy to Secure Boot. The computer rebooted and now beeps and lights. I have created a fresh boot usb.

I unplugged everything and did the static clear.

I plugged in only the usb keyboard/mouse.

I plugged in the HDMI.

It has stopped beeping, but it still will not boot.

Thanks you kind people.

Helping out this senior citizen on a Saturday.

Paul_Tikkanen · ‎08-25-2018

Hi:

Below is the link to the product specs for your PC.

https://support.hp.com/us-en/document/c03353621

I don't see any picture or mention of a HDMI port when you look at the illustration of the back of the PC.

So, I would have to assume that someone added a video card with a HDMI port, that was not a card specifically made for HP for your PC.

Your PC originally came with W7 according to the specs, and secure boot had to be disabled, because W7 is not compatible with secure boot.

However, Windows 10 is.

Now, here is why I think the PC was beeping and flashing at you.

Since a non-HP video card was installed, enabling secure boot tells the PC that an unauthorized device was installed and the PC refuses to boot up.

Of course you can't simply go into the BIOS and disable secure boot right now, because the PC basically doesn't work.

So, what you need to do is to unplug the PC, remove the add-on video card, and hook your monitor to one of the onboard video ports (VGA or DVI) in the back of the PC, fire it up, and the PC should now be working.

Go back into the BIOS, disable enable legacy mode, disable secure boot, shut down and unplug the PC, reinstall your video card, and all should be well again.

See this link for more information regarding the BIOS settings to change.

https://support.hp.com/us-en/document/c03653200/

If that doesn't resolve the problem, unfortunately I do not have any other suggestions for you to try.

View solution in original post

Paul_Tikkanen · ‎08-25-2018

Hi:

Below is the link to the product specs for your PC.

https://support.hp.com/us-en/document/c03353621

I don't see any picture or mention of a HDMI port when you look at the illustration of the back of the PC.

So, I would have to assume that someone added a video card with a HDMI port, that was not a card specifically made for HP for your PC.

Your PC originally came with W7 according to the specs, and secure boot had to be disabled, because W7 is not compatible with secure boot.

However, Windows 10 is.

Now, here is why I think the PC was beeping and flashing at you.

Since a non-HP video card was installed, enabling secure boot tells the PC that an unauthorized device was installed and the PC refuses to boot up.

Of course you can't simply go into the BIOS and disable secure boot right now, because the PC basically doesn't work.

So, what you need to do is to unplug the PC, remove the add-on video card, and hook your monitor to one of the onboard video ports (VGA or DVI) in the back of the PC, fire it up, and the PC should now be working.

Go back into the BIOS, disable enable legacy mode, disable secure boot, shut down and unplug the PC, reinstall your video card, and all should be well again.

See this link for more information regarding the BIOS settings to change.

https://support.hp.com/us-en/document/c03653200/

If that doesn't resolve the problem, unfortunately I do not have any other suggestions for you to try.

tampafldad · ‎08-26-2018

Hi Paul. Just wanted to say 'thanks'...and unbelievable clarity in your instruction. I follwed seamlessly and was complete in about 10 minutes.

Have a great day!

Ron

Paul_Tikkanen · ‎08-26-2018

You're very welcome, Ron.

You have a great day too!

Paul

Changed from Legacy to Secure Boot. Will not Boot and Get six beeps and orage light.

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