Black screen, some LEDs turn on. No logo.
Edit: Laptop unbricked. Formatted flash drive (FAT32), wrote BIOS file to it (same file, different names - GL702VM.ROM, GL702VMK.ROM, GL702VM.bin, GL702VMK.bin; I'm not sure if filename matters, because I later had to choose the file from the list), pressed Ctrl+Home, turned on the laptop. After some 10-15sec there was a barely noticable flash of the "activity LED" on the USB flash drive. After some more 10-15 secs, ASUS logo appeared and then BIOS flash utility started.
I tried this method before, but probably wasn't patient enough. This time I was holding Ctrl+Home all the time until that logo appeared.
That's good info right there! Always good to know something like this. You never know when you gonna need it.
I blocked this bios update using a tool from microsoft. I hope they stop pushing those bios updates through windows update because many people had problems with it, and if you don't check the updates manually often, it will download and apply the update without you even noticing it.
Can you share this tool with us? Thanks