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Archived This topic has been archived. Information and links in this thread may no longer be available or relevant. If you have a question create a new topic by clicking here and select the appropriate board.

‎08-16-2020 09:51 PM - edited ‎08-17-2020 09:45 PM

HP Recommended
Product: EliteBook 735 G5
Operating System: Microsoft Windows 10 (64-bit)

I've been experiencing various BIOS bugs for a long time. I couldn't tolerate them any more, so I came here to ask for bug fix.

 

1. BIOS lockup when entering boot menu or BIOS settings

This problem occurs when I reboot Windows 10 and press F9/F10 to enter boot menu or BIOS setup. I have my Windows 10 installed in EFI mode onto the internal NVMe drive. Sometimes when I reboot the machine and attempt to enter boot menu or BIOS setup, the laptop locked up itself at the BIOS logo screen. I powered off the machine by press power button and then reboot but it doesn't help. The machine still stuck at the BIOS logo screen. The only way to temporarily solve the problem is to open up the laptop, remove the SSD and power it up once without SSD. I often need to run Linux on my USB drive but this bug keeps me from doing it. Sometimes this problem occurs but sometimes not.

 

2.  Machine power off and power on again after selecting an external EFI boot drive

As I mentioned above I often need to run Linux on my USB drive. Debian Linux was installed on my Lexar JumpDrive S47 64GB with ESP and GPT. Every time when I reboot the machine from Windows 10 and select the USB drive with Linux in boot menu, the machine quickly prompts something like "xxx not found" (too fast) and instantly powers off and then powers on again entering Windows immediately if I don't call boot menu again. After the reboot I found the name of the boot entry changes from "Lexar JumpDrive" to "EFI - debian". That entry works but the bug is annoying.

 

3. Operating system not found with legacy boot and MBR partition table

When the Sure Start bug which prevented Windows 10 v2004 from installing occured initially, I tried to install Windows 10 on my laptop with legacy boot and MBR partition table. But with this setup every time I turn on the machine it stops me complaining "Operating system not found, press Esc to continue". After pressing Esc the machine would boot normally but that error prompt makes no sense.

 

4. VBIOS bug in legacy mode cause Windows to stop the graphics controller device

If turn legacy mode on and SecureBoot off, Windows 10 will stop the integrated graphics controller with an error code 43. I reinstalled the driver with DDU but it didn't help. As long as I turn UEFI mode on the problem disappeared. I'm sure this problem is related to legacy VBIOS.

 

I hope HP engineers can investigate these issues and fix the bugs as soon as possible. I'm sure all these bugs will heavily affect companies with custom Windows-To-Go environment on USB drive.

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