LA-E791P – HP 15-bs526ur
The HP 15-bs526ur, HP 15, HP 250 G6 and HP 15-bs002ne are built on the LA-E791P board designed by Compal. The catalog lists 22 files for it: 19 BIOS files, 1 schematic, 1 boardview and 7 EC firmware images.
Revisions seen in file names: 2.0 and 1.0. The BIOS dumps are 8 MB images. ODM project names: CSL50 and CSL52. First posted in October 2018 in BIOS Archive, Schematics & Boardviews Archive and Laptop & Desktop BIOS Files.
BIOS dumps 19
Schematics 1
Boardviews 1
EC / KBC firmware 1
From the uploader
HP 15-bs011la CSL50 CSL52 LA-E791P REV 2.0 2017-07-18 i3-6006U
Board facts
| Board number | LA-E791P |
|---|---|
| Designed by | Compal |
| Platform group | LA-E |
| ODM project | CSL50, CSL52 |
| Revisions | 2.0, 1.0 |
| BIOS chip size | 8 MB |
| EC / KBC chip | KB9022D |
| CPU generation | Intel 6th gen |
| Graphics | UMA (integrated) |
| First seen | 2018-10-08 |
| Source channels | BIOS Archive, Schematics & Boardviews Archive, Laptop & Desktop BIOS Files, Cyberlan Electronics |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
Laptops that use LA-E791P
- HP 15-bs526ur
- HP 15
- HP 250 G6
- HP 15-bs002ne
- HP 15 BS011LA
- HP 15-bs525ur
- HP CSL50-CSL52
- HP CSL50CSL52
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.
A boardview is the component placement map of the PCB: click a part or a net and the viewer highlights where it is and what it connects to. Used together with the schematic to find test points.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .7z | 7-Zip archive | 7-Zip or WinRAR |
| .bdv | Honhan .bdv boardview | OpenBoardView, FlexBV or Honhan BoardViewer |
| .cad | .cad boardview | FlexBV, OpenBoardView or BoardViewer |
| 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-E791P board?
Files in the catalog link LA-E791P to the HP 15-bs526ur, HP 15, HP 250 G6, HP 15-bs002ne, HP 15 BS011LA, HP 15-bs525ur, HP CSL50-CSL52 and HP CSL50CSL52.
What BIOS chip size does LA-E791P use?
The BIOS images for LA-E791P are 8 MB.
Is there a boardview for LA-E791P?
Yes, 1 boardview file in .bdv and .cad format.
Who designed the LA-E791P board?
LA-E791P is a Compal board number used by HP.
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.