What to do if my HP Desktop computer won’t turn on at all?
First, ensure the power cord and all cables are securely plugged into the computer and that the power cord is plugged into a grounded outlet. Check if the outlet is working by plugging another item into it. Also, verify that the monitor is connected to the computer, plugged in, and turned on.
What to do if my keyboard doesn’t work on my HP Pavilion 404 Desktop, even though the computer and monitor seem to work?
The keyboard might be connected improperly. If the PC beeps repeatedly or nothing happens when you press keys, check that the cable connector pins are straight and ensure the keyboard is connected to the keyboard port, not the mouse port.
What to do if the mouse doesn’t work on my HP Desktop, even though everything else does?
The mouse might be connected improperly. If nothing happens when you move the mouse, check that the cable connector pins are straight (PS/2 mouse only). Make sure the mouse is connected to the mouse port, not the keyboard port.
What to do if my HP Desktop computer doesn’t seem to be working?
A voltage spike, power outage, or brownout may have occurred. Restart the computer by clicking 'Start' on the taskbar, then 'Turn Off Computer,' and finally 'Restart.' If the computer is unresponsive to mouse or keyboard actions, reset it by pressing and holding the On button until the system turns off. Wait a few seconds before turning the computer back on.
What to do if the monitor doesn’t work on my HP Pavilion 404 Desktop, even though the computer appears to?
Check the power cord connection to the monitor and ensure the monitor is turned on using its power button. Verify the monitor's power cord is plugged into a grounded outlet, testing the outlet with another device if needed. Confirm the cable connection between the monitor and computer is secure. Lastly, adjust the brightness and contrast controls on the monitor.
What to do if I installed a new printer or other device, and it won’t work on my HP Pavilion 404 Desktop?
Make sure you installed the device drivers that came with the new device. You may need an updated driver for Windows XP. For non-HP peripherals, contact the vendor directly. For HP peripherals, visit the HP Web site.
What does 'Non system disk error' mean on my HP Desktop?
The PC is trying to start the operating system from the diskette drive. Press the Eject button and remove the diskette from the drive.
What does 'Invalid Media error' mean on my HP Desktop?
The PC is trying to start the operating system from the hp cd-writer drive. Press the Eject button immediately after turning on the PC and remove the CD from the drive.
How to remove a CD or DVD disc from my HP Pavilion 404 Desktop?
You cannot remove a CD or DVD disc after you have turned off the computer. Turn on the computer and press the Eject button to extend the tray.
What to do if when I push one of the special or multimedia buttons on the keyboard, nothing happens on my HP Pavilion 404?
Check the button configuration. To reconfigure the button: 1. Click Start on the taskbar. 2. Click Control Panel. 3. Click Printers and Other Hardware, if present. 4. Double-click Keyboard. 5. In the Keyboard Properties window that appears, click the Buttons tab.
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