Working BIOS for the HP Compaq CQ42 with AMD platform and discrete ATI graphics, Quanta board DA0AX2MB6E1 revision E, which the name says is fully tested.

BIOS dump archive for the HP G42 and G62 and the Compaq CQ42, Intel builds with Core i3 or i5 processors, on Quanta board DA0AX1MB6F0.

Compressed RAR package for HP Compaq CQ42 and CQ45 notebooks, tied by its name to the Quanta AX3/5 motherboard in its DDR3 version.

BIOS archive for the HP and Compaq G42, CQ42 and G62 notebooks with Intel Core i3 and i5 processors, 1.66 MB in RAR form.

BIOS package for the HP and Compaq G42, CQ42 and G62 laptops in their Intel Core i3/i5 configuration, in a 1.66 MB RAR archive.

BIOS image for the HP CQ42 AMD version on Quanta board DA0AX2MB6E0 revision E, with AMD graphics; the name lists the GPU part 216-0749001 and northbridge 216-0752001…

Raw binary BIOS dump for the HP Compaq Presario CQ42-401TU laptop, 2.00 MB in size. The TU suffix in HP model codes normally denotes an Intel-based configuration, but…

HP Compaq Presario CQ42-135TU BIOS firmware, supplied without a file extension and sized at 1 MB, which corresponds to an 8 Mbit SPI flash.

Firmware package for the HP Compaq CQ42-401TU laptop. The name gives the model and configuration code but no board number, so check the PCB markings to confirm the…

Firmware for the HP Compaq CQ42-103TU, built around the Intel GL40 chipset, with F.36 indicated as the BIOS version, inside an 834 KB RAR.

BIOS dump for the HP Compaq Presario CQ42-303TU laptop, stored without a file extension and measuring 1.00 MB, the size of an 8 Mbit flash chip.

Firmware dump for the Compaq Presario CQ42-276TU on Quanta board DA0AX1MB6H1, revision H, labelled U12.

BIOS image for the HP Compaq CQ42-372TU with an Intel Core i3 processor, labelled Power, which suggests it was saved or used to fix a no-power condition.

BIOS image for the HP Compaq Presario CQ42-116tu and 227tu, Core 2 Duo models with DDR2 memory, on Quanta board DA0AX3MB6C0 revision C, in a 1.67 MB ZIP.

Firmware dump for the HP Compaq CQ42-372TU Core i3 notebook, marked Display, pointing to a no-display repair case.

BIOS firmware image for the HP Compaq Presario CQ42-402AU, a model the name tags as an AMD VISION platform machine.

Firmware file for the HP Compaq Presario CQ42-355TU, supplied as a very small 55 KB ZIP.

BIOS dump for HP Compaq CQ42, CQ62 and G62 laptops with Core 2 Duo processors and DDR2 memory, in an 855 KB ZIP, and the name states it was tested and works.

Main BIOS binary for the Compaq CQ42-303TU from HP, 4.00 MB raw image. The Main label suggests it is the system flash rather than an EC or other auxiliary chip.