Insyde BIOS-UEFI corrupted on HP laptop - No display only black screen

[regenede79]

Hi,

I recently bought an HP 15-BS576TX notebook which has IGP and DGP (Dedicated) graphics. The firmware version is F.22 Insyde BIOS. I tried with a USB recovery by pressing Win+B+Power and still the BIOS is not recovering. The hard drive and power LED are glowing is the only indication that the system is powered ON. This is an SOS time since the technician will come to open up this laptop for replacing motherboard if it's not working.

Is there any possibility to recover now? I tried these steps and none of them worked:
 
1. Win Key+B + Power button
2. Win Key+B + Power button with USB recovery BIOS (tried previous and latest BIOS versions. The system restarts as indicated by the power on led and then nothing happens)
3. Removed battery and AC power. Pressed the power button for 30seconds, 1 minute and 2 minute.
4. Win Key+V - and does the same thing. Pretty much nothing is shown.
 
During all these steps, laptop switched on and hard drive led is blinking once in a while (I imagine it is in a gap of 4-5 seconds). Is there any other tool we can use to flash the BIOS? Since there is no display, I find it hard..Any help is appreciated.