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ksnr2006 wrote:Inorder to fix the Touchpad issue, try the hard reset steps:
Sometimes it is necessary to do a hard reset to erase all of the information in the temporary memory and regain functionality of your PC when it stops responding. For example, doing a hard reset is helpful if your keyboard quits responding, you cannot get your PC to come out of hibernation or sleep mode, or if a software program causes the PC to freeze.
The hard reset will not delete saved files on the hard drive.
Hard Reset Procedure:
1. Disconnect the AC Adapter.
2. Remove the Battery pack.
3. Hold the Power button down for 2 minutes.
4. Reconnect the AC adapter and Battery.
5. Turn on the Notebook power.
Also make sure that touchpad button is On. It will be just above the touchpad area where you can see the white led which shows that touchpad is on. If the led is in orange, touchpad is off.
If these steps does not work, update the BIOS version from HP website .
In rare case if the issue still persists, you need to restore the notebook to factory settings using Recovery Manager or recovery discs.
Before performing recovery, you need to backup all your data to external hard drive because it will erase the data from the hard drive:
Vista F11 procedure:
1. Reboot the notebook PC.
2. Press F11 when the HP logo displays.
3. When the Recovery Manager appears, click Next .
4. When prompted to use the Microsoft System Restore program, select No and click Next .
5. When prompted to use the System Recovery, select Yes and click Next .
6. Select the option to perform the recovery without backing up files and click Next .
The recovery process will return your PC to the factory image.
The Only thing I have to add to that, before you go reinstalling to factory recovery, You should have someone look at it. Touchpads are connected to the motherboard with a thin ribben cable. They are attached to the motherboard usually with a clamping connector, but they can still come loose. If they are too loose or have become disconnected, the touchpad (same for keyboards) will simply not work.
When I was working as head tech in my shop, we would have simple problems like this come in. If we charged the person anything, it would maybe $10 because of the quickness to fix it. They would usually come back again after that too for more work, repeting customers are bring in more money than one time deals 
My point, take it to a local shop, suggest the problem (as mentioned above) and see if they'll fix it. Be nice, that goes a long ways with techs.
Hope this helps!
AeSix
