
Standard and Optional Boards
| 1 | HP PCI expansion slot daughter card | |
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| System boards (includes replacement thermal material) | 
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| 2 | System board for use in models without Windows 8 | |
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| * | System board for use in models with Windows 8 Standard | |
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| * | System board for use in models with Windows 8 Professional | |
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| * | System board for use in models with NetClone | |
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| Memory modules  | 
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| Other boards | 
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| * | nVidia Quadro NVS315 PCIe x16 graphics card, 1 GB | |
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| * | nVidia Quadro NVS310 PCIe x16 graphics card, 512 MB | |
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| * | AMD Radeon HD8490 PCIe x16 graphics card, 1 GB | |
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| * | AMD Radeon HD8470 PCIe x16 graphics card, 2 GB DDR3 | |
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| * | AMD Radeon HD8350 PCIe x16 graphics card, 1 GB DDR3 | |
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| * | AMD Radeon HD 8350 1GB PCIe x16 DH GFX | |
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| * | GeForce GT630 PCIe x16 graphics card, 2 GB | |
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| * | Intel PRO/1000 single port GbE NIC, includes bracket | |
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| * | HP WLAN 802.11 a/b/g/n 2x2 module | |
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| Intel Core i7 processors (include thermal material) | 
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| * | 4770, 3.4 GHz,  | |
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| Intel Core i5 processors (include thermal material) | 
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| * | 4670, 3.4 GHz,  | |
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| * | 4570, 3.2 GHz,  | |
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* Not shown
Common POST Error Messages
| Screen Message | Probable Cause | Recommended Action | |
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| 1. System ROM checksum | 1. | Verify ROM, reflash if required | |
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 | error. | 2. | Remove suspected card, | 
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 | 2. Expansion board option | 
 | reboot | 
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 | ROM checksum | 3. Clear CMOS memory, reboot | |
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 | 4. | Replace system board | 
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| DMA, timers | 1. | Clear CMOS memory. | |
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 | 3. | Replace system board. | 
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| Incorrect memory configu- | 1. | Run Setup (F10). | |
| and | ration | 2. | Check DIMMs for proper | 
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 | seating, type, and HP | |
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 | compatibility. | 
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 | 3. | Remove DIMMs singularly and | 
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 | reboot to isolate faulty DIMM. | 
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 | 4. | Replace system board. | 
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| Populated DIMM configura- | Rearrange the DIMMs so that | ||
| Warning | tion is not optimized | each channel has the same | |
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 | amount of memory. | |
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| Keyboard failure. | Check keyboard connection or | ||
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 | keys. Check connector for bent of | |
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 | missing pins. Replace keyboard. If | |
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 | 304, possible system board prob- | |
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 | lem. | |
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| Graphics display controller. | 1. | Reseat graphics card. | |
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 | 2. | Clear CMOS. | 
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 | 3. | Check monitor connection. | 
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 | 4. | Replace graphics card. | 
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| Hard drive is about to fail. | 1. | Determine if hard drive is giving | |
| Detects Imminent Failure | 
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 | correct error message. Enter | 
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 | Computer Setup and run the | 
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 | Drive Protection System test | 
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 | under Storage > DPS  | 
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 | 2. | Apply hard drive firmware | 
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 | patch if applicable. | 
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 | 3. | Back up contents and replace | 
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 | hard drive. | 
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Miscellaneous Parts
| 1 | Fan sink | |
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| 2 | Solenoid lock | |
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| 3 | Speaker, 40mm x 70mm | |
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| 4 | Hood sensor | |
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| 5 | Fan | |
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| * | Printer port, PCI card | |
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| * | HP Ultraslim Keyed Cable Lock | |
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| * | Serial port, PCI card | |
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| * | Hard drive conversion bracket | |
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| * | USB powered speakers | |
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| * | Mouse, PS2, optical | |
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| * | Mouse, USB, HP Elite | |
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| * | Mouse, washable | |
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| * | Mouse, wireless, HP Elite | |
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| * | Mouse, USB, optical | |
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| * | Foot kit | |
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*Not shown
Diagnostic LEDs
| LED | Color | LED Activity | State/Message | 
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| Power | White | On | Computer on | 
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| Power | White | 1 blink every 2 seconds | Normal Suspend Mode | 
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| Power | Red | 1 blink every second followed | CPU thermal shutdown | 
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 | by a 2 second pause | 
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| Power | Red | 3 blinks, 1 blink every second | Processor not installed | 
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 | followed by a 2 second pause | 
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| Power | Red | 4 blinks, 1 blink every second | Power failure (power supply overload) | 
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 | followed by a 2 second pause | 
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| Power | Red | 5 blinks, 1 blink every second | |
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 | followed by a 2 second pause | 
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| Power | Red | 6 blinks, 1 blink every second | |
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 | followed by a 2 second pause | 
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| Power | Red | 7 blinks, 1 blink every second | System board failure (ROM | 
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 | followed by a 2 second pause | 
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| Power | Red | 8 blinks, 1 blink every second | Invalid ROM based on Checksum | 
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 | followed by a 2 second pause | 
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| Power | Red | 9 blinks, 1 blink every second | System powers on but is unable to | 
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 | followed by a 2 second pause | boot | 
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| Power | Red | 10 blinks, 1 blink every second | Bad option card | 
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 | followed by a 2 second pause | 
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| Power | Red | 11 blinks, 1 blink every second | Current processor does not support a | 
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 | followed by a 2 second pause | feature previously enabled. | 
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| none | none | System does not power on and | System unable to power on | 
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 | LEDs are not flashing | 
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| HP EliteDesk 800 G1, Tower | page 2 |