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Author

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1		-XWiki.Lindsay_Clark
	1	+XWiki.ncarpinello

Content

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1	1	= Possible Hardware Problems =
2	2
	3	+__Diagnostic strategies:__
3	3
	5	+Three of the PC models we have worked with so far have had various ways to diagnose errors encountered during their Power On Self-Test, or POST.
	6	+
	7	+* HP Compaq - Red LED that flashes 1-5 times with an accompanying beeping tone, errors diagnosed [[here>>url:https://support.hp.com/us-en/document/c02222922||rel="__blank" title="HP Compaq error codes"]].
	8	+* Dell Dimension - 4 LEDs on the back with A B C D labels that either light up green, amber, or not at all; error codes listed [[here>>url:https://www.manualslib.com/manual/227494/Dell-Dimension-2400-Series.html?page=35||rel="__blank"]]
	9	+* Dell OptiPlex - 4 LED numbers visible near audio input/output jacks; error codes listed [[here>>url:http://www.dell.com/support/article/us/en/19/SLN284978/a-reference-guide-to-the-dell-optiplex-diagnostic-indicators?lang=EN#2005_to_2009||rel="__blank" title="Dell OptiPlex error codes"]]
	10	+
	11	+
	12	+__Hard Drives__:
	13	+
4	4	* The "clicking of death" - Hard drive problem where the hard drive makes a distinct clicking or scraping noise telling that the hard drive is most likely damaged beyond repair. [[https:~~/~~/acsdata.com/hard-drive-click-of-death/>>url:https://acsdata.com/hard-drive-click-of-death/]]
5		-*
	15	+* Hard drive failure warning - the HP BIOS gave a warning that the hard drive was in danger of failing and should be backed up; no known remedy, symptom of old hard drives
	16	+
	17	+(((
	18	+__RAM__:
	19	+
	20	+* Dell Dimension 2400 - was told via light up LEDs that one of the RAM modules wasn't functioning. Removing it solved the error.
	21	+
	22	+(((
	23	+__Motherboard/Power Unit__: Dell Dimension 2400- unlisted LED code implies that either the motherboard or power unit is malfunctioning
	24	+)))
	25	+)))
	26	+