Compaq off, POST, controller, RAM failure, RAM failure, Keyboard failure, 301-KeyboardError, XX000YZZ RAM failure, XXOOOYZZ Ram failure, Replace the keyboard

Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1255, 1256, 1260, 1262, 1266, 1267, 1272, 1273, 1274, and 1275

RAM failure	1.	Replace the memory modules.
	2.	Replace the system board.
Memory test data error	1.	Replace the memory modules.
	2.	Replace the system board.
XX000YZZ RAM failure	Replace the system board.

XX000YZZ 201-Memory Error

Probable Cause			Recommended Action
RAM failure		1. Replace the memory modules.
		2.	Replace the system board.
Memory test data error		1. Replace the memory modules.
		2.	Replace the system board.
XXOOOYZZ Ram failure		Replace the system board.
301-Keyboard Error
Probable Cause			Recommended Action
Keyboard failure		1. Ensure that keys are not depressed during
		POST.
		2.	Reconnect the keyboard with the computer
		off.
		3.	Replace the keyboard.
304-Keyboard or System Unit Error
Probable Cause			Recommended Action
Keyboard or system board error		1. Replace the keyboard.
		2.	Replace the TouchPad or mouse.
		3.	Replace the system board.
601-Diskette Controller Error
Probable Cause	Recommended Action
Mismatch in drive type or failure in the diskette		1. Run Computer Checkup (TEST).
controller
		2.	Check and/or replace cables.
		3.	Replace the system board.

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