Dell BIOS Beep Codes
 Beep Codes   Possible Causes   Corrective Action 
 1 - 2   No video card detected   Reseat the video card 
 1 - 2 - 2 - 3   BIOS ROM checksum error    
 1 - 3 - 1 - 1   DRAM refresh error   Reseat the memory modules 
 1 - 3 - 1 - 3   8742 Keyboard Controller error   Reseat the keyboard connector 
 1 - 3 - 3 - 1   Memory defective or not present   Reseat the memory modules 
 1 - 3 - 4 - 1   RAM failure on line xxx   Reseat the memory modules 
 1 - 3 - 4 - 3   RAM failure on data bits xxx of low byte on memory bus   Reseat the memory modules 
 1 - 4 - 1 - 1    RAM failure on data bits xxx of high byte on memory bus   Reseat the memory modules 
Dell BIOS System Messages
 Message   Possible Cause   Corrective Action 
 nnnn Cache RAM Passed   nnnn KB of system cache RAM has been successfully tested    
 nnnn Extended RAM Passed   nnnn KB of extended RAM has been tested    
 nnnn Shadow RAM Passed   nnnn KB of shadow RAM has been successfully tested    
 nnnn System RAM Passed   nnnn KB of system RAM has been successfully tested    
 CD-ROM drive Identified   The systems automatic drive type detection feature has identified the CD-ROM drive    
 Diskette drive A error; Diskette drive B Error   Drive A or B is present but has failed the BIOS POST   Ensure that the drive is installed correctly in the chassis and detected correctly in the system setup 
 Entering Setup   The system is starting the system setup program    
 Extended RAM Failed at offset: nnnn   Extended memory is not working correctly or is not configured correctly at offset: nnnn   IF you receive this message after making changes in the system setup program, enter the program and restore the original value(s) 
 Failing bits: nnnn   nnnn is a map of the bits at RAM address that failed the memory test.  Each 1 in the map indicates a failed bit   If you receive this message after making changes in the system setup program, enter the program and restore the original value(s) 
 Fixed Disk n Failure; Fixed Disk Controller Failure   The hard drive specified by n is not working or not configured correctly   Ensure that the drive is installed correctly in the chassis and defined coracle in the system setup program 
 Fixed Disk n Identified   The system's automatic drive type detection feature has identified the hard disk drive(s)    
 Incorrect Drive x type - Run Setup   Diskette drive x is not correctly identified in the system setup program   Ensure that the drive is defined correctly in the system setup program 
 Invalid NVRAM media type   The system is having a problem accessing NVRAM (CMOS)   Set the configuration jumper to Maintenance mode and restart the system to return all settings to their defaults 
 Invalid system configuration data   The system configuration information is the system setup program is incorrect, or the battery charge may be low   Enter the system setup program and verify the system configuration, then restart the system 
 Keyboard controller error   The keyboard controller failed it's test   If you receive this message after making changes in the system setup program, enter the program and restore the original value(s) 
 Keyboard error   The keyboard is not working correctly   The keyboard or system board may need to be replaced 
 Keyboard error nn   The BIOS has detected a stuck key represented by scan code nn   Make sure nothing is resting on the keyboard.  If a key appears to be stuck, carefully pry it up.  if the problem persists, you may need to replace the keyboard 
 Mouse initialized   The system's mouse has been found and initialized    
 Operating system not found   The operating system cannot be located on drive A or drive C   Enter the system setup program and confirm that drive A or drive C is properly identified 
 Parity check 1 nnnn   A parity error has been detected on the system bus.  The BIOS attempts to locate the address and display it nnnn.  If it cannot locate the address, it displays ???? instead   If you receive this message after making changes in the setup program, enter the program and restore the original values(s) 
 Parity check 2 nnnn   A parity error has been detected on the I/O bus.  The BIOS attempts to locate the address and display it nnnn.  If it cannot locate the address, it displays ???? instead   If you receive this message after making changes in the setup program, enter the program and restore the original values(s) 
 Press <F1> to resume, <F2> to Setup   This message is displayed after a recoverable error message   Press <F1> to start the boot routine or <F2> to enter the system setup program and change any settings 
 Press <Del> to enter SETUP   Optional message displayed during POST   Id desired, press <Del> to enter the system setup program 
 Previous boot incomplete - Default configuration used   After a unsuccessful boot, POST loads default values   There may be incorrect values or incorrect settings in the system setup program.  Run the system setup program and attempt to restore the incorrect settings.  If the message reappears, set the configuration jumper to Maintenance mode and restart the system to return all settings to their defaults 
 Real time clock error   The RTC has failed the BIOS test   If you receive this message after making changes in the setup program, enter the program and restore the original values(s) 
 Resource allocation conflict on motherboard   The system cannot configure all system board devices without a resource conflict   Run the system setup program and try to resolve any obvious resource conflicts.  If the message reappears, set the configuration jumper to Maintenance mode and restart the system to return all settings to their defaults 
 Shadow RAM failed at offset: nnnn   Shadow RAM has failed at offset nnnn in the 64KB block in which the error was detected   If you receive this message after making changes in the setup program, enter the program and restore the original values(s) 
 System battery is dead - Replace and run SETUP   The CMOS clock battery indicator shows the battery is dead   Replace the battery and run the system setup program to reconfigure the system 
 System BIOS shadowed   The system BIOS has been copied to shadow RAM    
 System cache error - cache disabled   RAM cache failed the BIOS test.  The BIOS has disabled the cache   If you receive this message after making changes in the system setup program, enter the program and restore the original settings 
 System CMOS checksum bad - run SETUP   System CMOS has been corrupted or modified incorrectly, perhaps by an application program that changes data stored in CMOS   Run the system setup program and reconfigure the system by either reverting to the default values or by making your own selections 
 System RAM failed at offset: nnnn   System RAM failed at offset nnnn in the 64KB block in which the error was detected   If you receive this message after making changes in the setup program, enter the program and restore the original values(s) 
 System timer error   The timer test failed   If you receive this message after making changes in the setup program, enter the program and restore the original values(s) 
 UMB Upper limit segment address: nnnn   Displays the address nnnn of the upper limit of the UMB, indicating released segments of the BIOS which may be reclaimed by a virtual memory manager    
 Video BIOS shadowed   The video BIOS has been successfully copied to shadow RAM    
Dell BIOS Post Codes
 01   CPU register test in progress 
 02   CMOS read/write test failed 
 03   BIOS ROM checksum bad 
 04   8254 programmable interrupt controller failed 
 05   DMA controller initialization failed 
 06   DMA page-register test failed 
 08   RAM refresh verification failed 
 09   Starting first-64K RAM test 
 0A   First-64KB RAM IC or data line bad 
 0B   First-64KB RAM odd/even logic bad 
 0C   First-64KB address line bad 
 0D   First-64KB parity error 
 10   Bit 0 bad in first 64KB 
 11   Bit 1 bad in first 64KB 
 12   Bit 2 bad in first 64KB 
 13   Bit 3 bad in first 64KB 
 14   Bit 4 bad in first 64KB  
 15   Bit 5 bad in first 64KB 
 16   Bit 6 bad in first 64KB 
 17   Bit 7 bad in first 64KB 
 18   Bit 8 bad in first 64KB 
 19   Bit 9 bad in first 64KB 
 1A   Bit 10 bad in first 64KB 
 1B   Bit 11 bad in first 64KB 
 1C   Bit 12 bad in first 64KB 
 1D   Bit 13 bad in first 64KB 
 1E   Bit 14 bad in first 64KB 
 1F   Bit 15 bad in first 64KB 
 20   Slave DMA register bad 
 21   Master DMA register bad 
 22   Master interrupt-mask register bad 
 23   Slave interrupt-mask register bad 
 25   Loading interrupt vectors 
 27   Keyboard-controller test failed 
 28   CMOS RAM battery bad 
 29   CMOS configuration validation in progress 
 2B   Video-memory test failed 
 2C   Video initialization failure 
 2D   Video-retrace failure 
 2E   Searching for a video ROM 
 30   Switching to video ROM 
 31   Monochrome operation OK 
 32   Color (CGA) operation OK 
 33   Color operation OK 
 34   Timer-tick interrupt in progress (or bad) 
 35   CMOS shutdown test in progress (or bad) 
 36   Gate A20 bad 
 37   Unexpected interrupt in protected mode 
 38   RAM test in progress or high address line is bad 
 3A   Interval timer channel 2 bad 
 3B   Time-of-day test bad 
 3C   Serial-port test bad 
 3D   Parallel -port test bad 
 3E   Math co-processor test bad 
 3F   Cache-memory test bad