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Question posted by bap9510 on July 8th, 2013

Pc Will Not Boot Up. Nothing Shows On The Monitor.

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Answer #1: Posted by DreadPirateRoberts on July 31st, 2013 5:36 AM

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DreadPirateRoberts

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If it is hardware failure you should be hearing post beeps when you try to boot. There is the possibility that the monitor has a loose cable, or the video card or cable has gone bad. If you have checked the cables and are still having the issue the best thing to do is to seek out the help of a pc tech.

Related Compaq dc7900 Manual Pages

Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 2

... statements accompanying such products and services. The only warranties for technical or editorial errors or omissions contained herein. Hardware Reference Guide HP Compaq Business PC dc7900 Series Convertible Minitower First Edition (July 2008) Document part number: 490843-001 HP shall not be construed as constituting an additional warranty. The information contained herein is...

Hardware Reference Guide - dc7900 Series Convertible Minitower - Page 7

NOTE: The HP Compaq Convertible Minitower computer can be easily converted to a Desktop Configuration on page 43 in this guide. Figure 1-1 Convertible Minitower Configuration ENWW Standard Configuration Features 1 For more information, see Changing from a Minitower to a desktop. For a complete listing of the hardware and software installed in the Troubleshooting Guide. Instructions for ...

Illustrated Parts & Service Map: HP Compaq dc7900 Convertible Minitower Business PC - Page 1

... 5.25-inch bezel blank 4 Power supply, 365W, 85% efficient 4 Power supply, 365W 5 Front bezel * Not shown dc7900 Illustrated Parts & Service Map, CMT Chassis 450713-001 not spared 335937-001 462434-001 437799-001 450714-001 Mass Storage Devices... 1 Illustrated Parts & Service Map HP Compaq dc7900 Convertible Minitower Business PC © 2008, 2009 Hewlett-Packard Development Company, L.P. S.

Service Reference Guide: HP Compaq dc7900 Business PC - Page 7

... Designations ...54 Convertible Minitower (CMT 54 Small Form Factor (SFF 55 Ultra-Slim Desktop (USDT 55 Electrostatic...Monitor ...60 Cleaning the Mouse ...60 Service Considerations ...60 Power Supply Fan ...60 Tools and Software Requirements 60 Screws ...61 Cables and Connectors ...61 Hard Drives ...61 Lithium Coin Cell Battery 62 7 Removal and Replacement Procedures Convertible Minitower...

Service Reference Guide: HP Compaq dc7900 Business PC - Page 66

...You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage. Chassis Designations Convertible Minitower (CMT) Figure 6-1 Convertible Minitower chassis 54 Chapter 6 Identifying the Chassis, Routine Care, and Disassembly Preparation 6 Identifying the Chassis, Routine Care, and Disassembly Preparation This chapter provides general...

Service Reference Guide: HP Compaq dc7900 Business PC - Page 75

7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis Adherence to the procedures and precautions described in this guide are connected to it , noting its side to verify that are available on ...

Service Reference Guide: HP Compaq dc7900 Business PC - Page 76

... and Replacement Procedures Convertible Minitower (CMT) Chassis The Smart Cover Lock is a specialized tool available from HP. This lock prevents unauthorized access to the Desktop Management Guide. For...in any of the following circumstances: ● Power outage ● Startup failure ● PC component (for example, processor or power supply) failure ● Forgotten password NOTE: The ...

Service Reference Guide: HP Compaq dc7900 Business PC - Page 78

Cable Lock Figure 7-2 Installing a Cable Lock 66 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis Installing a Security Lock The security locks displayed below and on the following security devices are used to a fixed object. External Security Devices The ...

Service Reference Guide: HP Compaq dc7900 Business PC - Page 80

Fasten the security cable by looping it around a stationary object. Figure 7-5 Threading the Keyboard and Mouse Cables 68 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis HP Business PC Security Lock 1. Figure 7-4 Securing the Cable to a Fixed Object 2. Thread the keyboard and mouse cables through the lock.

Service Reference Guide: HP Compaq dc7900 Business PC - Page 82

... up on page 63) 2. Figure 7-8 Removing the Computer Access Panel To install the access panel, reverse the removal procedure. 70 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis Computer Access Panel 1. Prepare the computer for disassembly (Preparation for Disassembly on the access panel handle (1), slide the access panel back about 1.25...

Service Reference Guide: HP Compaq dc7900 Business PC - Page 84

Remove the front bezel (Front Bezel on page 70). 3. Figure 7-10 Removing Bezel Blanks from the Subpanel (Desktop Shown) NOTE: When replacing the subpanel, ensure that align it within the front bezel. Remove the computer access ...Pulling the subpanel away at the bottom of the subpanel when properly oriented. 72 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis

Service Reference Guide: HP Compaq dc7900 Business PC - Page 86

... Hard drive, SATA0 2nd HDD 1st ODD or 2nd HDD if no ODD present, SATA1 2nd ODD 3rd ODD 74 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis

Service Reference Guide: HP Compaq dc7900 Business PC - Page 88

... operate in flex mode if the total memory capacity of the DIMMs in Channel A is equal to dual channel 76 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis In flex mode, the channel populated with one channel only. ● The system will operate in a higher-performing dual channel mode if the...

Service Reference Guide: HP Compaq dc7900 Business PC - Page 90

... notch on the module with the tab on the computer. 9. Reconnect the power cord and turn on the computer. 78 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis Repeat steps 4 and 5 to install any security devices that the module is spread as equally as possible between Channel A and Channel B. 5. Make sure...

Service Reference Guide: HP Compaq dc7900 Business PC - Page 92

... the expansion card. Lift the expansion slot cover from the expansion slot. Figure 7-16 Removing an Expansion Slot Cover 80 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis If you are installing an expansion card in a vacant socket, remove the appropriate expansion slot cover on the two green thumb tabs inside...

Service Reference Guide: HP Compaq dc7900 Business PC - Page 94

... installed card, if needed . 11. If you must replace it snaps firmly into the socket on using Computer Setup. 82 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis

Service Reference Guide: HP Compaq dc7900 Business PC - Page 96

... mailer or other protective packaging and label the package "Fragile: Handle With Care." 84 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis Before handling a drive, ensure that have magnetic fields such as monitors or speakers. Avoid exposing a hard drive to liquids, temperature extremes, or products that you are discharged of work and...

Service Reference Guide: HP Compaq dc7900 Business PC - Page 98

...-height drive or other device that is no more information. 86 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis If you may result in damage to the drive. 2 Depending on . Drive Positions Figure 7-23 Desktop and Minitower Drive Positions Table 7-4 Drive Positions 1 Three 5.25-inch external drive bays for optional drives (optical drives...

Service Reference Guide: HP Compaq dc7900 Business PC - Page 126

... 5.25-inch drive bay has a shorter depth than 14.5 cm (5.7 inches) in the Desktop Configuration 7. Reconnect all power and data cables to the drive. 8. CAUTION: Hold the subpanel...damage to the internal 3.5-inch drive. Repeat this step for the desktop configuration. 114 Chapter 7 Removal and Replacement Procedures Convertible Minitower (CMT) Chassis Do not try to the green latch drive ...

Using eSATA on HP Compaq dc7900 Business PCs - Page 2

... storage devices, leading to 2 meter shielded cables and connectors The following table compares bandwidths between a computer system and a mass storage device. Both the HP Compaq dc7900 Business PC Small Form Factor (SFF) and Convertible Minitower (CMT) form factors have full eSATA support. Figure 1 Bandwidth comparison for internal mass storage devices in HP Compaq Business...