Websites like and AliSaler often provide direct download links for boardview files (usually in .CAD format) and BIOS dumps. For example, a free boardview for the HP 250 G6 LA-E791P is available for download, though it is prudent to cross-reference the BID number (usually 08328 for Rev 2.0) to ensure you have the exact match for your motherboard revision.
If you provide the (e.g., Dell XPS 15 9560), I can help locate the official schematic source or equivalent documentation. lae791p rev 20 schematic better
: Schematics are usually arranged by power domains. For the LA-E791P, look for pages labeled "Power Sequence" or "System Block Diagram" first. This tells you which voltage rail (e.g., +3VALW, +5VALW, +VCC_CORE) activates first. Websites like and AliSaler often provide direct download
Essential for diagnosing memory-related POST failures or blue screens. : Schematics are usually arranged by power domains
The board generates 1.8V and 1.0V "Always" rails immediately upon receiving power .
Generates the gate signal for the input protection switches. PU401 / PU501 PWM Buck Regulators 3.3V Always / 5.0V Always