Running the Dell Diagnostics 5-11groups and subtests within each test group. Each subtest is designed to detect anyerrors that may interfere with the normal operation of a specific device of thecomputer.NOTE: Some subtests requiring hardware not listed in the System Configurationarea of the main screen appear to run, but they conclude with a status message stat-ing &RPSRQHQWQRWSUHVHQW RUGLVDEOHG.Table 5-2 lists the diagnostic test groups, their subtests, and comments concerningtheir use.7DEOH'HOO'LDJQRVWLFV7HVWV7HVW*URXS 6XEWHVWV 'HVFULSWLRQRAM Quick Memory TestComprehensive Memory TestCache Memory TestTests the system RAM andprocessor cache.System Set CMOS Confidence TestDMA Controller TestReal-Time Clock TestSystem Timers TestInterrupt Controller TestAPIC TestAPIC MP TestSystem Speaker TestCoprocessor Calculation TestCoprocessor Duty Cycle TestCoprocessor Error Exception TestMultiprocessor TestTests the system board’s sup-port chips, DMA controller,computer timer, NVRAM,speaker controller, and cache,as appropriate.Tests the math coprocessorthat is internal to themicroprocessor.For systems with multi-processors, confirms that thesecondary microprocessor isoperational.Video Video Memory TestVideo Hardware TestText Mode Character TestText Mode Color TestText Mode Pages TestGraphics Mode TestColor Palettes TestSolid Colors TestTests the video subsystemand monitor by checking vari-ous aspects of video output.Keyboard Keyboard Controller TestKeyboard Key Sequence TestKeyboard Interactive TestStuck Key TestExternal Key Pad TestTests the keyboard by check-ing the keyboard controllerand by finding keys that stickor respond incorrectly.NOTE: For the full name of an abbreviation or acronym used in this table, see the abbreviations andacronyms list that precedes the Index.