Bricked HP Pavilion 500-010xt after BIOS FLash

[panorain]

Hi, I flashed the BIOS on a

Code:

H-Joshua-H61-uATX (Foxconn 2ADA)

mainboard, with Board Label

Code:

PCWPA0PCY4T00k

from

Code:

JOS_815.rom v8.15

to

Code:

8.17 Rev

. Using

Code:

Windows 8.1

with the

Code:

safuwin.exe

utility in

Code:

Powershell

. Once the process completed, I powercycled the machine and entered the BIOS setup. I checked the BIOS revision version and it stated bios revision

Code:

8.17 Rev. A

(all is good I thought), then I exited the BIOS setup. Now only a blank screen is displayed with no signal at monitor.
I have tried creating a usb medium with

Code:

FAT32

filesystem and placed

Code:

JOS_817.ROM

file now renamed

Code:

AMIBOOT.ROM

at root. No boot to medium.
I have tried creating a bootable medium with

Code:

UNetbootin

containing

Code:

FreeDOS

then dropping in

Code:

safuwin.exe

along with

Code:

AMIBOOT.ROM

. The machine will not boot (screen blank).
I have tried simultaneously pressing ctrl ++ and shift ++ at boot and no luck. Is this more than BIOS set to quiet boot somehow?
What are your thoughts on how to correct this situation if possible?