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Compaq Presario Internet PC 7000 Series Computers | TROUBLESHOOTING

PRODUCT DESCRIPTION | TROUBLESHOOTING | ILLUSTRATED PARTS CATALOG
REMOVAL AND REPLACEMENT PROCEDURES | JUMPER AND SWITCH INFORMATION | SPECIFICATIONS

RESETTING USER PASSWORDS POWER-ON SELF TEST (POST) CONFIGURATION DIAGNOSTIC ERROR CODES TROUBLESHOOTING WITHOUT DIAGNOSTICS |  | Power-On Self Test (POST) POST is a series of diagnostic tests that run automatically when the system is turned on. After the computer is turned on, POST checks the following assemblies to ensure that the computer system is functioning properly: Keyboard System board Memory modules Video memory Disk drives Hard drives Power supply POST also detects the type of mass storage devices installed in the computer. If POST finds an error in the system, an error condition is indicated by an audible and/or visual message. The table below gives explanations of the error codes and a recommended course of action.
NOTE | An external speaker must be installed into the speaker output connector to hear the audible beeps during POST.
Click a link below to find the probable cause and recommended action for a given error message.
Disk Drive A Error | Keyboard Controller Error | System BIOS Shadowed
Extended RAM failed at offset | Keyboard Error | System Cache Error
Failing Bits | Operating System Not Found | System CMOS Checksum Back
Fixed Disk 0 or 1 Failure | Parity Check 1 | System RAM Failed at Offset
Fixed Disk Controller Failure | Parity Check 2 | System Timer Error
Incorrect Drive A Type | Real Time Clock Error | UMP Upper Limit Segment
Invalid NVRAM Media Type | System Battery is Dead | Video BIOS Shadowed
POST Messages
Error Message | Probable Cause | Recommended Action
Disk Drive A Error | Drive A is present, but fails the BIOS POST disk tests. | Run Setup. Replace the signal cables. Replace the disk drive.
Extended RAM failed at offset | Extended memory not working or not configured properly. | Replace the memory modules. Replace the system board.
Failing Bits nnn | nnn is a map of the bits at the RAM address which failed the memory test. | Run Setup. Replace the system board.
Fixed Disk 0 or 1 | Hard drive is not working or not configured properly. | Run Setup. Replace the system board.
Fixed Disk Controller Failure | Hard drive is not working or not configured properly. | Run Setup. Replace the system board.
Incorrect Drive A Type | Type of disk in drive A not correctly indentified. | Replace the memory modules. Replace the disk drive.
Invalid NVRAM Media Type | Problem with NVRAM (CMOS) access. | Replace the system board.
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Keyboard Controller Error | Keyboard, I/O keyboard controller (on system board), or mouse error. | Replace the keyboard. Replace the mouse. Replace the system board.
Keyboard Error | Keyboard, I/O keyboard controller (on system board), or mouse error. | Replace the keyboard. Replace the mouse. Replace the system board.
Operating System not found | Operating system cannot be located on either drive A or C. | Run Setup.
Parity Check 1 | Parity error found in the system bus. | Run Setup. Replace the memory modules. Replace the system board.
Parity Check 2 | Parity error found in the I/O bus. | Run Setup. Replace the ISA board (modem).
Real Time Clock Error | Real-time clock fails BIOS test. | Replace the system board.
System Battery is Dead | RTC battery is dead. | Replace the RTC battery. Run Setup.
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System BIOS Shadowed | System BIOS copied to Shadow RAM. | Status Message: no action required.
System Cache Error | RAM cache failed the BIOS test. | Run Setup.
System CMOS Checksum Bad | CMOS is corrupted or modified incorrectly. | Run Setup.
System RAM failed at Offset, nnn | System RAM failed. | Replace the memory modules.
System Timer Error | DMA, timers, etc. | Replace the system board.
UMB Upper Limit Segment Address, nnn | Displays the address of nnn of the upper limit of Upper Memory Blocks, indicating releases segments of the BIOS. | Status Message: no action required.
Video BIOS Shadowed | Video BIOS successfully copied to shadow RAM. | Status Message: no action required.
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