Notebook Operating System and Recovery

Hello Community. please help me. 
I just updated my laptop bios to F.19 Rev.A version. 
and now the problem is that my laptop won't show anything on screen on boot up! 

i can't access my UEFI boot options. Pressing F2, F8, F10 or ESC on startup won't work anymore. the laptop keeps running but it won't show anything on screen. 

process i did. 

1. i installed BIOS in my flash drive. 
2. I pressed "Windows + B" to start automatic bios install mode. The bios setup did not ask me on which version of bios ID my laptop had. its "0836B". i had looked into the bios folder (from another laptop), it had 0836D, 0836B and other one.  
3. Bios was installed. 
4. Laptop restarted.
5. Now nothing is showing up on the screen! 

what could be the problem?
1. was the bios a corrupt file?
2. did i made any mistake on installing the bios file?

3. do i need to install anything before i had installed my bios?

please do help me fix this problem. 

problem actually started when i opened my laptop. i was trying to just blow the dust inside laptop and when i restarted my laptop, it suddenly shut down without any warning. later on during startup, thermal shutdown 90D was shown even when my laptop was really cool and there was no sign of heat. 
then i looked up in the hp support for solution. i found a post where i was meant to update the bios! and thats why I updated bios. 
it was pretty weird. before this bios update, my laptop used to shutdown when it came to loading up windows. 
but when i used to access bios, laptop would not shutdown. 
i even format my computer with windows 10, the laptop did not shut down! 
but after hp logo on screen and when laptop was trying to load up the windows, THEN THE LAPTOP SHUT DOWN. 

it clearly seems to be the software issue rather than hardware. 

please help!