Try a different brand of media. System files missing or not properly installed. See your browser’s documentation for specific instructions. Make sure the fans are connected and working properly some fans only operate when needed. Computer appears locked up and will not turn off when the power button is pressed. Turn off the computer and insert a thin metal rod into the emergency eject hole and push firmly.

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L2 cache – 4 MB. Diskette drive cannot read a diskette. Use recovery diskette to scan hard drive for errors. Power supply shuts down intermittently. Computer will not continue and no HP logo screen has appeared. Check to see that the processor is present. The list of all available drivers for your product is shown above.

HP DisplayPort To VGA Adapter(ASAA)| HP® Thailand

Some applications run in the background and can be closed by right-clicking on their corresponding icons in the task tray. Use a utility to locate and block usage of bad sectors. In Windows XP only: Otherwise, the computer will not boot the operating system.

The green LED will light if inserted properly.


HP Compaq dx7400 Business PC Service Reference Guide – Troubleshooting Without Diagnostics

The network controller is defective. Cyber Monday Office Depot deals: Be sure the monitor cable is securely connected to the computer. Turn off the computer, turn on the external device, then turn on the computer to integrate the device with the computer system. If the screen is blank, plug the monitor into a different video port on the computer if one is available.

The directory structure is bad, or there is a problem with a file. Solving Diskette Problems Common causes and solutions for diskette problems are listed in the following table.

Solving Memory Problems If you encounter memory problems, some common causes and solutions are listed in the following table. Cannot enable integrated graphics after installing a PCI Express graphics card.

Movie will not play in the DVD drive. Blank screen no video. If the system remains in suspend mode, shut down the computer by pressing and holding the power button for at least four dz7400 then press the power button again to restart the computer.

Use Windows Device Manager to deselect the automatic settings for the board and choose a basic configuration that does not cause a resource conflict. A fan may be blocked or not turning. Ensure that all cables are properly and securely connected and that pins in the cable or connector are not bent down.


Fallout 76 is live: To assist you in resolving problems online, HP Instant Support Professional Edition provides you with self-solve diagnostics.

The device is not working. Network controller is not set up properly.

HP Compaq dx Microtower PC – Driver Downloads | HP® Customer Support

Mouse may need cleaning. Open hood, press power button, and see if the processor fan spins.

Fluorescent lights or fans may be hpp close to the monitor. Ensure that the cable is securely attached to the network connector and that the other end of the cable is securely attached to the correct device.

The audio device may be connected to the wrong jack.