HP ProDesk 490 G2 Specifications

Maintenance and Service GuideHP ProDesk 400 G2 MicrotowerHP ProDesk 480 G2 MicrotowerHP ProDesk 490 G2 Microtower

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Solving hard drive problemsHard drive error occurs.Cause SolutionHard disk has bad sectors or has failed. 1. In Windows 7, click Start, click Computer

Nonsystem disk/NTLDR missing message.Cause SolutionThe system is trying to start from the hard drive but the harddrive may have been damaged.▲Perform

Solving media card reader problemsMedia card will not work in a digital camera after formatting it in Windows.Cause SolutionBy default, Windows will f

Do not know how to remove a media card correctly.Cause SolutionNOTE: Never remove the card when the green LED is flashingAfter installing the media ca

Blank screen (no video).Cause SolutionCAUTION: When attempting to resume from Sleep state, do nothold down the power button for more than four seconds

Blank screen and the power LED flashes Red seven times, once every second, followed by a two second pause, and the computerbeeps seven times. (Beeps s

Image is not centered.Cause SolutionPosition may need adjustment. Press the monitor's Menu button to access the OSD menu. SelectImageControl/ Hor

High pitched noise coming from inside a flat panel monitor.Cause SolutionBrightness and/or contrast settings are too high. Lower brightness and/or con

Sound does not come out of the speaker or headphones.Cause SolutionSoftware volume control is turned down or muted. Double-click the Speaker icon on t

Computer appears to be locked up while recording audio.Cause SolutionThe hard disk may be full. Before recording, make sure there is enough free space

1 Product featuresStandard configuration featuresFeatures may vary depending on the model. For support assistance and to learn more about the hardware

Printer will not print.Cause SolutionIf you are on a network, you may not have made the connectionto the printer.Make the proper network connections t

Keyboard commands and typing are not recognized by the computer.Cause SolutionKeyboard connector is not properly connected. Shut down the computer, re

Mouse does not respond to movement or is too slow.Cause SolutionMouse may need repair. See the Worldwide Limited Warranty for terms and conditions.Com

Table 7-1 Solving Hardware Installation Problems (continued)A new device is not recognized as part of the system.Cause SolutionTo access Device Manag

Power LED flashes Red six times, once every second, followed by a two second pause, and the computer beeps six times. (Beepsstop after fifth iteration

Table 7-2 Solving Network Problems (continued)Wake-on-LAN feature is not functioning.Cause Solution1. From the Start screen, type c, and then select

Table 7-2 Solving Network Problems (continued)Network status link light never flashes.NOTE: The network status light is supposed to flash when there

Network controller stopped working when an expansion board was added to the computer.Cause SolutionNetwork controller interrupt is shared with an expa

Solving memory problemsIf you encounter memory problems, some common causes and solutions are listed in the following table.CAUTION: Power may still b

Power LED flashes Red five times, once every second, followed by a two second pause, and the computer beeps five times. (Beepsstop after fifth iterati

Front panel componentsDrive configuration may vary by model. Some models have a bezel blank covering the optical drive bay.1 Slim Optical Drive (optio

Solving CD-ROM and DVD problemsIf you encounter CD-ROM or DVD problems, see the common causes and solutions listed in the followingtable or to the doc

Movie will not play in the DVD drive.Cause SolutionDecoder software is not installed. Install decoder software.Damaged media. Replace media.Movie rati

Solving USB flash drive problemsIf you encounter USB flash drive problems, common causes and solutions are listed in the following table.USB flash dri

A USB device, headphone, or microphone is not recognized by the computer.Cause SolutionThe correct device driver is not installed. 1. Install the corr

Unable to connect to the Internet.Cause Solution4. Select the Cookies check box and click the Delete button.Cannot automatically launch Internet progr

Computer will not continue after HP logo screen displays.Cause SolutionTo access Automatic Repair:1. Press the Windows logo + l to open the Settings c

8 POST error messagesThis appendix lists the error codes, error messages, and the various indicator light and audible sequencesthat you may encounter

Control panel message Description Recommended action2. In Computer Setup, set Advanced >Device Options > NIC PXE Option ROMDownload to DISABLE t

Control panel message Description Recommended action219-ECC Memory Module Detected ECCModules not supported on this PlatformRecently added memory modu

Control panel message Description Recommended action515-Power Supply fan not detected Power supply fan is not connected or may havemalfunctioned.1. Re

Rear panel components — HP ProDesk 400 G2 and 480 G2models1 Power Cord Connector 7 Line-Out Connector for powered audiodevices (green)2Line-In Audio

Control panel message Description Recommended action1720-SMART Hard Drive Detects ImminentFailureHard drive is about to fail. (Some hard driveshave a

Control panel message Description Recommended action3. If the memory configuration was recentlychanged, unplug the power cord, restorethe original mem

Control panel message Description Recommended action2. If the error persists and system BIOS hasbeen recently updated, restore previoussystem BIOS ver

Control panel message Description Recommended action4. Replace keyboard.Parity Check 2 Parity RAM failure. Run Computer Setup and Diagnostic utilities

Activity Beeps Possible cause Recommended actionuntil failure occurs. Replace the device that iscausing the failure. Continue adding devicesone at a t

Activity Beeps Possible cause Recommended action3. Replace the system board.Red Power LED flashes eleventimes, once every second,followed by a two sec

9 Password security and resetting CMOSThis computer supports security password features, which can be established through the Computer SetupUtilities

1. Shut down the operating system properly, then turn off the computer and any external devices, anddisconnect the power cord from the power outlet.2.

3. When the key icon appears, type your current password, a slash (/) or alternate delimiter character,your new password, another slash (/) or alterna

3. Remove the access panel.CAUTION: Pushing the CMOS button will reset CMOS values to factory defaults. It is important to backup the computer CMOS se

Rear panel components — HP ProDesk 490 G2 models1 Power Cord Connector 7 Line-Out Connector for powered audiodevices (green)2Line-In Audio Connector

10 HP PC Hardware DiagnosticsTo help troubleshoot and diagnose failures, use the UEFI-based hardware diagnostic solution that HPincludes on all produc

1. Go to http://www.hp.com.2. Point to Support, located at the top of the page, and then click Download Drivers.3. In the text box, enter the product

11 System backup and recoveryBacking up, restoring, and recovering in Windows 8.1 orWindows 8Your computer includes tools provided by HP and Windows t

Using Reset when the system is not respondingNOTE: You may be prompted by User Account Control for your permission or password when you performcertain

Recovery using Windows operating system media (purchased separately)To order a Windows operating system DVD, contact support. Go to http://www.hp.com/

1. After you successfully set up the computer, create recovery media. This media can be used to reinstallthe original operating system in cases where

NOTE: Do not use media cards for creating recovery media. The system may not be able to boot up from amedia card and you may not be able to run system

1. Select Start > All Programs > Productivity and Tools > HP Recovery Disc Creator.2. Select Windows disk.3. From the drop-down menu, select

1. Close all open programs.2. Click the Start button, right-click Computer, and then click Properties.3. Click System protection, System Restore, clic

7. Select Yes, and then click Next. Your computer restarts.8. When the computer restarts, you will see the Recovery Manager welcome screen again. Unde

Serial number locationEach computer has a unique serial number and a product ID number that are located on the exterior of thecomputer. Keep these num

6. If Recovery Manager asks if you want to run System Recovery from Media or Hard Drive, select Media.On the Welcome screen, under I need help immedia

After the repair is completed:1. Eject the Windows 7 operating system DVD and then insert the Driver Recovery DVD.2. Follow the on-screen instructions

A Power cord set requirementsThe power supplies on some computers have external power switches. The voltage select switch feature onthe computer permi

Country-specific requirementsAdditional requirements specific to a country are shown in parentheses and explained below.Country Accrediting Agency C

B Statement of VolatilityHP confirms that Intel-based business desktop HP ProDesk 400 G2 MicroTower and Small Form Factor, HPProDesk 480 G2 MicroTower

9. Select File > Save Changes and Exit.10. To clear the Setup or Power-On passwords if set, and clear any other settings, power down thecomputer an

C SpecificationsChassisHeightWidthDepth13.98 in6.50 in14.10 in355 mm165 mm358 mmApproximate Weight 14.33 lb 6.50 kgTemperature RangeOperatingNonoperat

Current Leakage with Energy Efficient Power Supply <600uA / 230 VAC1This system utilizes an active power factor corrected power supply. This allows

IndexAaccess panelillustrated 10locked 86removal 26audible codes 123audio problems 97Bbackup and recovery, Windows 7134Backup and Restore, Windows 713

Iinstalling2.5-inch hard drive 443.5-inch hard drive 42battery 48drive cables 36expansion card 32memory 29optical drive 39Internet access problems 113

2 Activating and Customizing the SoftwareNOTE: This chapter provides information for both Windows 7 and Windows 8.Activating and customizing the softw

Ssafety and comfort 83safety precautionscleaning 20SATAconnectors on system board 23data cable pinouts 23hard drive characteristics 23screws, correct

Installing or upgrading device driversWhen installing optional hardware devices after the operating system installation is complete, you must alsoinst

Customizing the monitor displayYou can customize display settings for Windows 8 separately for the Start screen and the Desktop.To customize the Start

3 Illustrated parts catalogNOTE: HP continually improves and changes product parts. For complete and current information onsupported parts for your co

© Copyright 2014 Hewlett-PackardDevelopment Company, L.P. The informationcontained herein is subject to change withoutnotice.Intel and Pentium are tra

Item Description(1) Front bezel For use in all countries and regions except for the People’s Republic of China For use in the People’s Republic of C

Item Description Intel Core i7 4790S (3.2-GHz, 6-MB L3 cache) Intel Core i7 4771 (3.5-GHz, 8-MB L3 cache) Intel Core i7 4770 (3.4-GHz, 8-MB L3 cach

CablesItem Description(1) SATA data cable, hard drive, 10 inch, two straight ends(2) SATA data cable, 10 inch, one straight end, one right angled end

Misc partsItem Description(1) Fan sink (includes replacement thermal material) Standard BFR/PVC free(2) Speaker(3) Fan Standard Non-recycled(4) Front

Item Description HP WLAN 802.11 a/b/g/n + Bluetooth 4.0 Intel Dual Band Wireless-N 7260NB 802.11 a/b/g/n 2x2 WiFi + BT4.0 Card reader Optical driv

DrivesDescriptionHard drives and solid-state drives (SSDs)2 TB, 7200 rpm, 3.5 inch1 TB, hybrid SSD, 2.5-inch1 TB, 10000 rpm1 TB, 7200 rpm, 3.5 inch500

PCI boards Description(1) AMD Radeon HD8350 DH PCIe x16 graphics card, 1 GB(2) Nvidia NVS310 PCIe x16 graphics card, 512 MB Nvidia NVS315 PCIe x16 gr

4 Routine care, SATA drive guidelines, anddisassembly preparationThis chapter provides general service information for the computer. Adherence to the

Preventing electrostatic damage to equipmentMany electronic components are sensitive to ESD. Circuitry design and structure determine the degree ofsen

Recommended materials and equipmentMaterials and equipment that are recommended for use in preventing static electricity include:●Antistatic tape●Anti

Safety warning noticeWARNING! To reduce the possibility of heat-related injuries or of overheating the device, do not placethe device directly on your

●Never cover the ventilation slots on the monitor with any type of material.●Install or enable power management functions of the operating system or o

●If you remove a key, use a specially designed key puller to prevent damage to the keys. This tool isavailable through many electronic supply outlets.

ScrewsThe screws used in the computer are not interchangeable. They may have standard or metric threads andmay be of different lengths. If an incorrec

NOTE: Batteries, battery packs, and accumulators should not be disposed of together with the generalhousehold waste. In order to forward them to recyc

●Some flat ribbon cables come prefolded. Never change the folds on these cables.●Do not bend any cable sharply. A sharp bend can break the internal wi

5 Removal and replacement procedures:MicrotowerNOTE: HP continually improves and changes product parts. For complete and current information onsupport

Access panelTo access internal components, you must remove the access panel:1. Prepare the computer for disassembly (Preparation for disassembly on pa

Front bezelDescriptionFront bezel for use in all countries and regions except for the People’s Republic of ChinaFront bezel for use in the People’s Re

Optical drive bezel blankOn some models, there are bezel blanks covering the slim optical drive, 3.5-inch, and 5.25-inch drive baysthat need to be rem

MemoryDescription8-GB, PC3-128004-GB, PC3-128002-GB, PC3-12800The computer comes with double data rate 3 synchronous dynamic random access memory (DDR

iv Safety warning notice

Populating DIMM sockets (HP ProDesk 400 G2 and 480 G2 models)There are two DIMM sockets on the system board, with one socket per channel. The sockets

Installing DIMMsCAUTION: You must disconnect the power cord and wait approximately 30 seconds for the power to drainbefore adding or removing memory m

Expansion cardsNvidia NVS310 PCIe x16 graphics card, 512 MBNvidia NVS315 PCIe x16 graphics card, 1 GBAMD Radeon HD8490 DP PCIe x16 graphics card, 1 GB

3. Remove the screw that holds down the expansion card retention latch (1) then slide the latch up (2) andpull it off the rear of the chassis (3).4. L

b. If you are removing a PCI Express x1 card, hold the card at each end and carefully rock it back andforth until the connectors pull free from the so

8. To install a new expansion card, hold the card just above the expansion socket on the system boardthen move the card toward the rear of the chassis

DrivesDescriptionOptical drivesDVD±RW driveDVD-ROM driveBlu-ray BD-RW SuperMulti XL DriveHard drives and solid-state drives (SSDs)2 TB, 7200 rpm, 3.5

HP ProDesk 400 G2 and 480 G2 models:●The primary Serial ATA (SATA) hard drive must be connected to the dark blue primary SATA connectoron the system b

Drive positions1 Slim optical drive bay2 3.5-inch internal hard drive bay3 2.5-inch internal hard drive bay4 3.5-inch internal hard drive bayNOTE: The

Removing a slim optical driveCAUTION: All removable media should be taken out of a drive before removing the drive from thecomputer.1. Prepare the com

Table of contents1 Product features ...

4. Align the small pins on the release latch with the small holes on the side of the drive and press the latchfirmly onto the drive.5. Slide the optic

Removing a 3.5-inch hard driveNOTE: Before you remove the old hard drive, be sure to back up the data from the old hard drive so thatyou can transfer

Installing a 3.5-inch hard drive1. Prepare the computer for disassembly (Preparation for disassembly on page 25).2. Remove the access panel (Access pa

Removing a 2.5-inch hard driveNOTE: Before you remove the old hard drive, be sure to back up the data from the old hard drive so thatyou can transfer

Installing a 2.5-inch hard drive1. Prepare the computer for disassembly (Preparation for disassembly on page 25)2. Remove the access panel (Access pan

WLAN moduleDescriptionHP WLAN 802.11 a/b/g/n + Bluetooth 4.0Intel Dual Band Wireless-N 7260NB 802.11 a/b/g/n 2x2 WiFi + BT4.0You can install a WLAN mo

5. Remove the two Phillips screws (2) that secure the module to the PCIe card.6. Lift the module to a 45-degree angle, and then pull it away to remove

10. Connect the antenna cables from the module (5).WLAN module 47

RTC batteryThe battery installed on the computer provides power to the real-time clock. When replacing the battery, usea battery equivalent to the bat

Type 2a. To release the battery from its holder, squeeze the metal clamp that extends above one edge ofthe battery. When the battery pops up, lift it

Cleaning the keyboard ... 20Cleani

7. Reset the date and time, your passwords, and any special system setups using Computer Setup.8. Lock any security devices that were disengaged when

Front I/O and power switch assembly1. Prepare the computer for disassembly (Preparation for disassembly on page 25).2. Remove the access panel (Access

HP ProBook 480 G2 models5. Remove the cables from the metal clip built into the base pan.6. From the front of the computer, remove the Torx T15 screw

7. Press the latch on the left side of the assembly (2), and then rotate the left side of the assembly intothe chassis (3).8. From the inside of the c

Fan sinkDescriptionFan sink, standardFan sink, BFR/PVC freeWARNING! To reduce risk of personal injury from hot surfaces, allow the internal system com

4. Lift the fan sink from atop the processor.CAUTION: Fan sink retaining screws should be tightened in diagonally opposite pairs (as in an X) to evenl

ProcessorDescriptionIntel Core i7 4790 (3.6-GHz, 6-MB L3 cache)Intel Core i7 4790S (3.2-GHz, 6-MB L3 cache)Intel Core i7 4771 (3.5-GHz, 8-MB L3 cache)

3. Remove the fan sink (Fan sink on page 54).4. Rotate the locking lever to its full open position (1).5. Raise and rotate the microprocessor retainer

Speaker1. Prepare the computer for disassembly (Preparation for disassembly on page 25).2. Remove the access panel (Access panel on page 26).3. From t

5. Under the drive cage, remove the speaker cable from the clip built into the base of the chassis (1), andthen remove the speaker from the chassis (2

Processor ...

FanDescriptionFanFan, non-recycled1. Prepare the computer for disassembly (Preparation for disassembly on page 25).2. Remove the access panel (Access

5. Lift the fan out of the chassis (2).To install the fan, reverse the removal procedure. Be sure to orient the air flow out of the computer.Fan 61

Power supplyNOTE: System board appearance may vary.Description300W, Energy Star 5.0300W, Active PFC + SEPA300W, Active PFC300W, regular180W, Energy St

Power supply connectors connect to the drives as follows:●P3 connector: primary hard drive●P5 connector: primary optical drive●P4 connector: secondary

4. From the outside rear of the chassis, remove the four silver Torx T15 screws that secure the powersupply to the chassis.64 Chapter 5 Removal and

5. From the inside of the chassis, press the power supply release button (1), slide the power supply towardthe front of the computer (2) , rotate slig

System boardNOTE: All system board spare part kits include replacement thermal material.NOTE: System board appearance may vary.DescriptionSystem board

6. Slide the system board toward the front of the computer to disengage the I/O panel, and then lift thesystem board out of the computer.When reinstal

HP ProDesk 400 G2 system board calloutsSys Bd Label Sys BdConnectorColor Component Sys Bd Label Sys BdConnectorColor ComponentCOMB Serial Port Black

PWR PowerconnectorWhite 24-pin mainpower connector X1PCIEXP1 PCI Express x1 Black Expansion cardPSWD PasswordjumperGreen Clear systempasswords X16PCI

8 POST error messages ...

Sys Bd Label Sys BdConnectorColor Component Sys Bd Label Sys BdConnectorColor ComponentPWRCPU ProcessorpowerconnectorWhite 4-pin processorpower PB/

HP ProDesk 490 G2 system board calloutsSystemBoard LabelSystem BoardConnectorColor Component SystemBoard LabelSystem BoardConnectorColor ComponentCO

DIMM3 DIMM3(Channel A)White Memory module X1PCIEXP2 PCI Express x1 Black Expansion cardDIMM4 DIMM4(Channel A)Black Memory module X1PCIEXP1 PCI Exp

6 Computer Setup (F10) UtilityComputer Setup (F10) UtilitiesUse Computer Setup (F10) Utility to do the following:●Change factory default settings.●Set

Using Computer Setup (F10) UtilitiesComputer Setup can be accessed only by turning the computer on or restarting the system. To access theComputer Set

Computer Setup—FileNOTE: Support for specific Computer Setup options may vary depending on the hardware configuration.Table 6-1 Computer Setup—FileOp

Computer Setup—StorageNOTE: Support for specific Computer Setup options may vary depending on the hardware configuration.Table 6-2 Computer Setup—Sto

Table 6-2 Computer Setup—Storage (continued)displayed. Use the arrow keys to select the preferred bootable device and press Enter. The computer thenb

Table 6-3 Computer Setup—Security (continued)●Accessory USB PortsSlot Security Allows you to disable any PCI or PCI Express slot. Default is enabled.

Table 6-3 Computer Setup—Security (continued)NOTE: To enable this option, a Setup password must be set.●No PPI provisioning (Windows 8 only) - This o

Appendix B Statement of Volatility ... 1

Computer Setup—PowerNOTE: Support for specific Computer Setup options may vary depending on the hardware configuration.Table 6-4 Computer Setup—Power

Computer Setup—AdvancedNOTE: Support for specific Computer Setup options may vary depending on the hardware configuration.Table 6-5 Computer Setup—Ad

Table 6-5 Computer Setup—Advanced (for advanced users) (continued)Bus Options Allows you to enable or disable:●PCI SERR# Generation. Default is enabl

7 Troubleshooting without diagnosticsThis chapter provides information on how to identify and correct minor problems, such as USB devices, harddrive,

If it becomes necessary to call for technical assistance, be prepared to do the following to ensure that yourservice call is handled properly:●Be in f

●If you have installed an operating system other than the factory-installed operating system, check to besure that it is supported on the system.●If t

Computer date and time display is incorrect.Cause SolutionRTC (real-time clock) battery may need to be replaced.NOTE: Connecting the computer to a liv

Poor performance.Cause SolutionProcessor is too hot. 1. Make sure airflow to the computer is not blocked. Leave a10.2-cm (4-inch) clearance on all ven

Computer powered off automatically and the Power LED flashes Red two times, once every second, followed by a two secondpause, and the computer beeps t

Solving power problemsCommon causes and solutions for power problems are listed in the following table.Power supply shuts down intermittently.Cause So