BIOS dump for the Casper C500 fitted with an NVIDIA GeForce GT 840M, on the D15D board revision 2.1. The 7z archive is 3.35 MB. Discrete graphics and integrated-only versions of the same model usually need different firmware, so confirm the GPU is present on your board. Flash the SPI chip with a hardware programmer after saving the original read, and verify that the revision on the PCB and the image size match the hardware.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosfiles. Enginerys does not host this file.
How to open a .7z file
High-ratio compressed archive, often used for large BIOS collections.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →