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HP envy laptop BIOS rollback, InsydeH2O F.96 Rev.A
#1
Help needed -
    I have an HP envy 17t-s000 CTO laptop, which has been running windows 7 professional for the last 2.5 years perfectly.
This past week I updated the BIOS from InsydeH2O F.80 to the most recent version (F.96 Rev.A).  I did not realize when installing the newer update, that it failed to work with windows 7 professional.   

     I have now had to upload windows 10 to my laptop, which is not useable in the work that I do.  I have been attempting for the last 8 days to restore the original BIOS (F.80), and then run windows 7 again, but to no avail.

     I have receive 2 error messages whenever attempting to use windows 7 professional . . . 

1)  "The BIOS in this system is not fully ACPI compliant . . . *** STOP: OXOOOOOOA5 . . ."

2)   Boot device not found. Please install an operating system on your hard disk (3F0).


     I have been able to locate a few suggested repairs online this past week, but almost all of them say that I should go to the "Advanced options" in the InsydeH2O BIOS utility.  However, this is hidden, and I have found no one who lists how to unlock these "Advanced" features.

     I am not very familiar with the technical aspects of exactly what has happened, with updating to the newer version (F.96 Rev.A) from HP,
but I would greatly appreciate help in restoring this laptop to its correct working order with windows 7 professional.
Thank you sincerely for your help.
Eric Wilson -  Isaiah Ministries
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