When I turn on my pc I an see the hard drive light working and flashing, indicating that it is loading up, but my monitor does not receive any video signal,so I hooked my pc to my freinds monitor and I got the same thing, no image, just red green and blue block lins that say no signal or no input from pc, any ideas about it?

Are you powering on your computer and your monitor...

If your computer appears to boot, but nothing on your monitor...
Here's some tricks I would try. Something here, might help...
1. Verify the monitor's power cord is plugged firmly into the wall outlet and the back of the monitor.
2. Verify the monitor cable is firmly connected to the computer and the monitor.
3. Verify that you have turned the monitor power switch on.
4. If the power light on the monitor is not on, test the wall outlet (plug in a light or something you know works).
5. If the power light on the monitor is not on, try a different power cord.
6. If the power light is on and yellow or orange or flashing, but nothing displays, or the display is incorrect, borrow a monitor from a friend. If that works, your monitor probably needs replaced.
7. Also, you could try your monitor on a friend's computer. If it doesn't work, your monitor probably needs replaced. If it works properly on your friends computer, the problem may be with your computers video output port, motherboard video chip (or video card, if you have one), or drivers.
Good luck.

If your computer won't boot...
The hard drive, motherboard, or some other critical component may be failing, or just the OS or hard drive corrupted. If you have files that you do not want to lose, you could try this... Pull the hard drive out, and use a "USB Hard Drive Adapter" (available fairly cheap online) to connect the hard drive to a friend's computer, and save all the personal files (documents, pictures, etc.) you can to a folder on the friend's computer or an external hard drive. That way, at least you may not lose your files.
Then, you could try to do a Factory Restore or Reload on the computer, and if that works, copy your personal files back to your newly restored computer. Good luck.

Hello,

This is a common issue when the unit has been dropped or jarred really hard. The click is more than likely the hard drive trying to read the disk but can not access information.

With that in mind, try this: Remove all USB, SD, or any cards and attachment from you computer. If you have one at hand, connect an external monitor to the pc. Power on. If you get an image on the external monitor, restart pc and press F8, select "Enabel-low-resolution video" and move forward. If you get a picture after this, your video drivers need updating. BUT......

The clicking sound is a major concern because usually the hard drive is the only hardware part that have moving parts. (other than the optical drive or if you have a solid state hard drive.) If you have a dard drive the same size or close with an operating system on it, replace your hard drive with the GOOD drive and retry. If it boots, you need to replace the hard drive. (and hopefully you have a backup of your data)

Worst case, you may need an authorized HP agent to service your pc.

Good Luck
C2Soluitons

You say the power light is orange--I'm assuming that you mean the monitor.
This indicates the monitor is not receiving a signal from the computer.
Assuming that the computer actually powers up (fan runs, you can hear the hard drive being accessed, etc) then your problem lies in the video card.

If, on startup, you do see the BIOS info and maybe even the Windows splash screen before your monitor goes dark, then the problem lies in the video card drivers. In this case, starting in safe mode will work and allow you to download and install new drivers.

u need to replace the display cable. i had came problem i had replace it. it working fine.

Your computer power supply has shut down with circuit protection. Look for equipment or leads that have shorted out.
Remove all the equipment until only the monitor is plugged in.
If this works restore the equipment one by one until you find the fault.
Try this order
monitor
fans
hard drives
If it does not work with just the monitor it is either a faulty power supply or a faulty motherboard.
The Power supply is a the cheapest one to buy, to find out which is faulty.

yes, I think your memory is the problem, it's crash
it is hardware problem, not system

how many video cards do you have installed?

You might need to change your AGP video card (the card where you attach your monitor cable). If a separate video card is not present, you might be getting your video directly from your mainboard. If the latter is the case, you can buy or borrow a PCI card with video port, insert it in a PCI slot in your mainboard and attach your monitor there.

What makes you think your hard drive has failed?
If you think your hard drive has failed you would get a message as your system started up. Something to the effect (can not find a bootable media type). If you have no display on your monitor but you see the lights on your PC lighting up & flashing. More likely you have a video issue. Pay close attention when you start your PC. Listen for a single beep as it starts up. Watch the green light on your monitor, see if it turn to the color amber.
Watch the front of you PC as well. Do you see any led's light up?

check both your power and video connections to the monitor, sounds more like a monitor power issue.
if the connections appear ok, but screen still blank, try connecting a known good working monitor from somewhere else and see if it works with your pc, if it does, your original monitor is faulty, if it doesn't, you have a pc video issue.