support.dell.com System Messages and Beep Codes C-3Parity check 2nnnnA parity error was found inthe I/O bus at address nnnn.Call Dell for technical assistance. (For instructions,see Chapter 5, “Getting Help.”)Real time clockerrorThe CMOS battery thatsupports data stored inNVRAM may be dead.Call Dell for technical assistance. (For instructions,see Chapter 5, “Getting Help.”)Shadow RAMfailed at off-set: nnnnShadow RAM failed ataddress nnnn.Call Dell for technical assistance. (For instructions,see Chapter 5, “Getting Help.”)CMOS battery isdead—Replaceand run SetupThe CMOS battery is dead. Call Dell for technical assistance. (For instructions,see Chapter 5, “Getting Help.”)System cacheerror—cachedisabledThe primary cache internal tothe microprocessor hasfailed.Call Dell for technical assistance. (For instructions,see Chapter 5, “Getting Help.”)System CMOSchecksum bad—run SetupThe BIOS has been updated.CMOS has been corrupted ormodified, possibly by anapplication program thatchanges data stored inCMOS.Reboot the computer and press as soon asyou see the Dell logo screen to enter the Setupprogram and reconfigure the system. If the prob-lem persists, call Dell for technical assistance. (Forinstructions, see Chapter 5, “Getting Help.”)System RAMfailed at off-set: nnnnSystem RAM failed ataddress nnnn in the 64-KBblock at which the error wasdetected.Call Dell for technical assistance. (For instructions,see Chapter 5, “Getting Help.”)System timererrorA chip on the system boardmay be malfunctioning.Run the System Board Devices device groupand the Keyboard Controller Test in the DellDiagnostics. (For instructions, see “Running theDell Diagnostics” found later in this chapter.)Table C-1. System Error Messages (continued)Message Cause ActionNOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary in the system Help.
