BIOS image collection for an HCL K21 model, with a PDC tag in the name, packed in a small 416 KB RAR archive. No motherboard number, revision or firmware version is stated, and the PDC suffix is not explained. Such a file serves as a reference or recovery image when the laptop is dead or will not boot past the logo, written to the flash chip with a programmer such as a CH341A or RT809. Read the existing chip first and keep that copy, then compare the image size with the chip capacity before programming.
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 @biosarchive. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →