Hp Z820 cannot enter bios

[taccess]

Hi 

I was in bios settings and turned of legacy rom and changed mmio to 64 bit and now f10 does nothing .

i can’t get back into bios to change settings back 

any ideas on what to do ? 

[CF4]

Hi

Try Holding down the KEY(s) prior to applying power.

[taccess]

i just removed the battery for 5 minutes and it reset the bios.

However now i have another problem , when i am in the bios > boot order > missing my "windows boot Manager" C drive.

I have treid alot of settings and cant seem to get bois to recognise my uefi HDD . It worked prior to the bios reset ???

[mdklassen]

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@taccesswrote:

However now i have another problem , when i am in the bios > boot order > missing my "windows boot Manager" C drive.

I have tried a lot of settings, and can't seem to get BIOS to recognise my uefi HDD . It worked prior to the BIOS reset ???

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> HP z820 BIOS Reset > Missing UEFI "Windows Boot Manager" Drive Now ????????

 > ‎04-05-2018 06:41 AM

> I reset my BIOS, and now i can't start my operating HDD.

> When i go into BIOS, normally my C/Drive is located at UEFI BOOT SOURCES > Windows Boot Manager .

> All that is there is USB Hard drive and USB Floppy/CD.

No listing for your CD/DVD device, either?

> I have tried many different BIOS combinations, but can't figure out what is missing.

> Do i need to install a driver or ???

A "driver" is loaded only when Windows is loading.  Since you cannot load Windows, you are barking up the wrong tree.

Assuming that the disk-drive has not completely "died", and that it is receiving electrical power, and that the SATA

cable is tightly connected at both the motherboard and the disk-drive, check your "legacy" and your "UEFI" settings.

By "resetting" the BIOS, you removed the disk-drive from the list of "bootable" UEFI devices. Restore it to the list.

[mdklassen]

> When i go into BIOS, normally my C/Drive is located at UEFI BOOT SOURCES > Windows Boot Manager .

> All that is there is USB Hard drive and USB Floppy/CD.

No listing for your CD/DVD device, either?

> I have tried many different BIOS combinations, but can't figure out what is missing.

> Do i need to install a driver or ???

A "driver" is loaded only when Windows is loading.  Since you cannot load Windows, you are barking up the wrong tree.

Assuming that the disk-drive has not completely "died", and that it is receiving electrical power, and that the SATA

cable is tightly connected at both the motherboard and the disk-drive, check your "legacy" and your "UEFI" settings.

By "resetting" the BIOS, you removed the disk-drive from the list of "bootable" UEFI devices. Restore it to the list.