Sponsored Topics. Ruffin is an unincorporated community located in Rockingham County, North Carolina. It is northeast of Reidsville, North Carolina and southwest of Danville, Virginia just off US 29 (Future Interstate 785). It has a population of 2,116[citation needed].
Test your battery using HP Battery Check. Running HP Battery Check with HP Support Assistant installed: Running HP Battery Check without HP Support Assistant installed: 1  Click Start. 2  Click HP Support Assistant. 3  Click Troubleshoot. 4  Click the Power, Thermal and Mechanical button. 5  From the Power tab, click HP Battery Check.
Page 80: Check The Estimated Ink Levels To check the ink levels from HP Utility Open HP Utility. HP Utility is located in the Hewlett-Packard folder in the Applications folder at the top level of the hard disk. Select the HP ENVY 7640 series from the list of devices at the left of the window.