LA-4107P – HP Pavilion DV4
LA-4107P is the Compal main board used in the HP Pavilion DV4, HP Compaq CQ41, HP Compaq DV4 and HP Pavilion DV4-2080. 9 files are indexed for this board: 6 BIOS files, 3 schematics and 3 EC firmware images.
Revisions seen in file names: 1.0 and 2.0. BIOS images are 4 MB. ODM project names: NAL70 and NCL70. First posted in December 2017 in BIOS Archive, Schematics & Boardviews Archive and Cyberlan Electronics.
BIOS dumps 6
Schematics 3
Board facts
| Board number | LA-4107P |
|---|---|
| Designed by | Compal |
| Platform group | LA-4 |
| ODM project | NAL70, NCL70 |
| Revisions | 1.0, 2.0 |
| BIOS chip size | 4 MB |
| Graphics | discrete GPU, UMA (integrated) |
| First seen | 2017-12-07 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Cyberlan Electronics |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-4107P
- HP Pavilion DV4
- HP Compaq CQ41
- HP Compaq DV4
- HP Pavilion DV4-2080
What these files are for
A BIOS dump is a full image of the board's SPI flash chip. It is written back with an SPI programmer when the original firmware is corrupted, after a chip replacement, or to recover from a failed update. Read and save the original chip first: serial number, DMI data and the Intel ME / AMD PSP state differ between boards.
A schematic is the circuit diagram of the main board: power rails, power-up sequence, component values and net names. It is the reference for measuring voltages and tracing a fault.
EC (embedded controller) firmware runs the keyboard controller, power sequencing, battery charging and fans. Depending on the board it lives in a separate chip (ENE KB9012, ITE IT85xx, Nuvoton NPCE) or inside the main SPI image, so check which applies before flashing.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| PDF schematic | any PDF reader; Sumatra PDF and Foxit handle large schematics well | |
| .rar | RAR archive | 7-Zip or WinRAR |
| .zip | ZIP archive | 7-Zip, WinRAR or the built-in Windows extractor |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Which laptops use the LA-4107P board?
Files in the catalog link LA-4107P to the HP Pavilion DV4, HP Compaq CQ41, HP Compaq DV4 and HP Pavilion DV4-2080.
Who designed the LA-4107P board?
LA-4107P is a Compal board number used by HP.
What BIOS chip size does LA-4107P use?
The BIOS images for LA-4107P are 4 MB.
Is there a boardview for LA-4107P?
No boardview has been indexed for LA-4107P yet; the schematic is available on this page.
Where do the download links go?
Each button opens the original public Telegram post the file was shared in. ChambersDesignInc.com only indexes and cross-references those posts.