Circuit diagram in PDF named AS5670, most likely for an Acer Aspire 5670, though no brand, board number or revision is given in the name. At 1.84 MB it should hold the complete set of pages. Use it to follow the DC-in path, verify that the main rails and power-good signals are present, and locate parts in a suspect area. Check the project code on the cover page against your PCB before working from it.
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 @ITHINKHS. 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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)