It is a GD25LQ64CVIG, a Datasheet can be found here: http://www.elm-tech.com/ja/products/spi-flash-memory/gd25lq64/gd25lq64.pdf
If you have one of those cheap ch341 programmer, you can select GIGADEVICE as manufacturer and GD25Q64 as device.
The chips allows a maximum of 2V, meaning you’ll need a level converter from the programmers 3.3V.
Hope you find someone who can share a dump, flashing it to your should not be a problem if its a full one. (but it will overwrite specific data like your windows key!) Using a normal bios binary might also work, but you need to find the offset of it inside the chip. (most likely 0x400000)
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