Pegatron schematic covering the IPM61-BE desktop board, with IPMSB-BECR also named, likely a related board or revision code, in a 1.91 MB PDF. The IPM61 code points to an Intel H61-based OEM motherboard of the kind Pegatron supplied to several PC brands. Use the diagram to follow the CPU VRM, memory power, standby rails and power button logic when a board will not start. Search the PDF for net names, and make sure the model silkscreen and revision on your board match before trusting part values.
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 @afsschematicfree. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.