Hi guys, I have Acer Swift 3 SF314-54G it's been 4 years YAY, but a few weeks ago Windows update bricked my laptop, so my laptop already run on Firmware 1.17, and I've upgraded it, but I decided to reinstall Windows 10 to fix my slow laptop, I did it, then I update all the driver from Windows update as windows can do it, but I didn't know that Windows update ALSO decided to update the 1.17 firmware again

and fool me I set it to auto restart after finish downloading update, then I go somewhere in order to kill time while waiting the update to complete, when I go home and check the laptop, it shows BLANK screen, just black nothing, fan spin so fast, but I couldn't enter bios or windows, and then I force it shut down, but when I turned it on, the laptop turn on for a few seconds, then turn off and turn on again, fan spins fast, but it didn't show bios flashing screen on acer logo, just blank black screen, I've brought the laptop to repair shop, and they say that I have bricked motherboard and need to be replaced, they costed about $500, I'd prefer to save that and buy a newer and better laptop, my question is :
1. Do I break my laptop?
2. Did my laptop motherboard broken?
3. Do I have to reflash the bios, if I do, how to do that, I've done FN+Esc keys but doesn't work.
4. What is the key combination to enter Bios rescue disk on Acer Swift 3 SF314-54G.
5. Do I have to flash the bios chip using flashing tool like SPI Programmer???
Please guys, HELP ME

as I already loved this laptop, and beside of that, I'm still low on budget to buy a new laptop
Anyway thanks, I really appreciate if someone reply this...