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Question posted by junegoritz on May 24th, 2013

To Order A Real-time-clock Battery Or Cmos - Where Do I Locate The Hp Spares #?

The HP spares part website doesn't list a CMOS battery spares number for s/n: MXL9101318

Current Answers

Answer #1: Posted by hzplj9 on May 24th, 2013 1:37 PM
This answer was accepted by the poster of the original question.
hzplj9

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You shouldn't need a HP spare number. Follow the attached link to HP for information and support for your PC. The likely battery you need is a Lithium cell 2032 which is common to a large amount of PC's.

If you remove the side panel and look at the motherboard you will see a circular silver cell in a holder probably near the bottom end of the motherboard. Carefully remove the battery and replace with the same type. That's it job done. Battery should cost no more than a couple of pounds for a reasonable quality probably less.If it is a soldered in battery then you will need a person skilled with a soldering iron.

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01570344

Related Compaq dc7900 Manual Pages

Safety and Regulatory Information Desktops, Thin Clients, and Personal Workstations - Page 27

... http://www.hp.com/go/reach. See http://www.dtsc.ca.gov/hazardouswaste/perchlorate/. Chemical Substances HP is not ...Perchlorate Material-special handling may apply The computer's real-time clock battery may contain perchlorate and may contain the following ... If it is not supported on Linux or FreeDOS Desktop PCs. ENERGY STAR is necessary to comply with legal requirements...
Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 56

... outlet and disconnect any external devices. 4. You must disconnect the power cord to avoid damage to the real-time clock. When replacing the battery, use a battery equivalent to back up the CMOS settings. There is removed or replaced, the CMOS settings will be extended by briefly touching a grounded metal object. NOTE: The lifetime of fire and burns...
Illustrated Parts & Service Map: HP Compaq dc7900 Convertible Minitower Business PC - Page 3

...internal USB ports 1-2. Boot Order - Smart Cover (some...15 Secondary ATA (IDE) Controller dc7900 Illustrated Parts & Service Map, CMT... • Remote Help Lockout - Lists the following options are available. Exits... (component location may vary...CMOS button P3 CPU power connector XBT1 Real-time-clock battery...• System BIOS • SKU number (some models) -Restarts computer and executes...
Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers - Page 4

...System Resources 4-7 4.3.1 Interrupts 4-7 4.3.2 Direct Memory Access 4-8 4.4 Real-Time Clock and Configuration Memory 4-9 4.4.1 Clearing CMOS 4-9 4.4.2 Standard CMOS Locations 4-10 4.5 System Management 4-10 4.5.1 Security Functions 4-10 4.5.2 ... Connector 5-8 5.6 Keyboard/Pointing Device Interface 5-9 5.6.1 Keyboard Interface Operation 5-9 iv www.hp.com Technical Reference Guide
Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers - Page 13

... (monitor input) Relative humidity root mean square read-only memory revolutions per minute real time clock Read/Write Serial ATA small computer system interface Singles data rate (memory) Synchronous Dynamic RAM www.hp.com 1-7 Acronym or Abbreviation ODD OS PAL PATA PC PCA PCI PCI-E PCM PCMCIA PEG PFC PIN PIO PN POST PROM PTR...
Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers - Page 37

... web site: www.pcisig.com. Technical Reference Guide www.hp.com 4-1 For detailed information on the PCI bus must ... with contiguous memory locations requires that only one or more data cycles, with each cycle requiring a clock (PCICLK) cycle.... PCI bus overview (4.2) ■ System resources (4.3) ■ Real-time clock and configuration memory (4.4) ■ System management (4.5) ■...
Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers - Page 45

...and/or system unit. 3. Technical Reference Guide www.hp.com 4-9 Memory Area (128 bytes) 80h 7Fh ...equivalent 3-VDC lithium battery. 4.4.1 Clearing CMOS The contents of three or more years. All locations of the standard...Real-Time Clock and Configuration Memory The Real-time clock (RTC) and configuration memory (also referred to as "CMOS") functions are illuminated. 4. As shown in a battery...
Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers - Page 46

...System Support 4.4.2 Standard CMOS Locations Table 4-6 describes standard configuration memory locations 0Ah-3Fh. Location 00-0Dh 0Eh 0Fh...are reserved. Configuration Memory (CMOS) Map Function Location Function Real-time clock 24h System board ID Diagnostic...and overall status. Higher locations (>3Fh) contain information that provide different levels of locations 10h-2Dh Extended memory,...
Technical Reference Guide: HP Compaq dc7900 Series Business Desktop Computers - Page 120

Index power LED indications 7-7 processor, Intel 3-2 Processor Upgrading 3-3 R Real-time clock (RTC) 4-9 ROM flashing 8-2 S SATA/eSATA 5-2 SATA Connector 5-3 serial interface 5-6 Serial Interface Connector 5-7 Smart Cover (hood) Lock... 5-11 upgrading BIOS 8-2 upgrading graphics 6-5 V VGA connector 6-6 W Web sites (for additional information 1-1 Index-2 www.hp.com Technical Reference Guide
Service Reference Guide: HP Compaq dc7900 Business PC - Page 38

...PCs to the local client computer. HP SoftPaq Download Manager HP SoftPaq Download Manager is based on each machine. Alerts are sent real-time when triggered by visiting http://www.hp.com/go/ssm. 26 Chapter 4 Desktop Management Using SSM, you can confidently and efficiently use interface for locating...BIOS passwords and computer boot order remotely from Symantec, and Microsoft...
Service Reference Guide: HP Compaq dc7900 Business PC - Page 74

... disposed of together with the computer provides power to the real-time clock and has a minimum lifetime of fire and chemical burn if the battery is a risk of about three years. See the appropriate removal and replacement chapter for instructions on the replacement procedures. In order to forward them to recycling or proper disposal, please...
Service Reference Guide: HP Compaq dc7900 Business PC - Page 122

... provides power to the real-time clock and has a lifetime of about recycling programs, go to http://www.hp.com/ recycle. Battery The battery that you are discharged of static electricity by plugging the computer into a live AC wall socket. Do not expose to replace the battery: 110 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis There is...
Service Reference Guide: HP Compaq dc7900 Business PC - Page 185

...your computer provides power to the real-time clock and has a lifetime of about recycling programs, go to recycle used when the computer is not handled properly. The lithium battery is only used electronic hardware, HP original print cartridges, and rechargeable batteries. This computer contains an internal lithium manganese dioxide battery. NOTE: HP encourages customers to http://www...
Service Reference Guide: HP Compaq dc7900 Business PC - Page 220

... Cage on page 183). 3. When replacing the battery, use a battery equivalent to the real-time clock and has a lifetime of the lithium battery can be extended by plugging the computer into the chassis to AC power. 208 Chapter 9 Removal and Replacement Procedures Ultra-Slim Desktop (USDT) Chassis The lithium battery is only used when the computer is NOT...
Service Reference Guide: HP Compaq dc7900 Business PC - Page 239

... for Option ROMs Recently added PCI expansion card contains 1. Clear CMOS. 5. If the message disappears, there may need to see if the problem remains. 4. Replace the system board. 110-Out of Memory Space for booting from being downloaded during POST. RTC (real-time clock) battery may be replaced. Run Computer Setup and check the configuration...
Service Reference Guide: HP Compaq dc7900 Business PC - Page 252

... persists and you feel uncomfortable about performing the operation, contact an authorized dealer or reseller. Solution To resume from the electrical outlet. Cause Solution RTC (real-time clock) battery may be disabled (or enabled) in standby mode. Cause Solution The Num Lock key may need to use the arrow keys. The Num Lock light...
Troubleshooting Guide - Page 16

... Solution The Num Lock key may need to the system board. Computer will lose any key. Computer date and time display is always applied to be on the keypad. Cause Solution RTC (real-time clock) battery may be replaced. If a problem persists and you are unable to resolve it yourself or if you want to...
Troubleshooting Guide - Page 57

... contains 1. POST Numeric Codes and Text Messages This section covers those POST errors that may need to be replaced. Clear CMOS. (See Appendix B, Password Security and Resetting CMOS on page 61.) 5. RTC (real-time clock) battery may be used for booting from being downloaded during POST. Verify the correct ROM. 2. If a PCI expansion card was recently...
vPro Setup and Configuration for the dc7900p Business PC with Intel vPro Processor Technology - Page 12

...option sets the timeout value for the ME to sleep after 1 minute of Wake-On-ME. HP recommends a setting of the AMT platform. It must be modified from the dc7700p that allowed ... "admin" password. Default Setting = None, Recommended Setting = Current Date and Time This option sets the PRTC (Protected Real Time Clock). The timeout value can provide the system to 1/4/2021. 23. A value of...
vPro Setup and Configuration for the dc7900p Business PC with Intel vPro Processor Technology - Page 21

...console. Default Setting = None, Recommended Setting = Current Date and Time This option sets the PRTC (Protected Real Time Clock). PRTC has a valid date range of the AMT platform. a. ... = Enabled, Recommended Setting = Enabled This option allows you to be remotely modified at any time. 21. c. Select Idle Timeout. Select Remote Firmware Update, and then select Enabled. Default ...

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