How to reset my computer HP Pavilion back to factory settings(?)

the manual covers that at hp.com
why not read the chapter on recovery
no problem told at all
as in what factory parts are failing or infected
BIOS or windows if is windows.

Press F11 for system factory reset.

Launch the HP recovery application that should be installed on your computer. Then select the factory reset option. This will boot the computer into a small partition that will allow the computer to reformat and restore back to factory standards. Please note that selecting this will delete all data on your machine. More information on the reset process visit here http://h10025.www1.hp.com/ewfrf/wc/document?docname=c02638587&tmp_task=useCategory&cc=us&dlc=en&lc=en&product=4221625#N108

Bro You Don't Need To Restore Factory Your Computer Just Renew Your Windows
It Will Automatically Reset The Factory Setting

Your computer is running slow due to it only having 512mb ram, suggest a ram upgrade try crucial.com for a scan of the correct memory and price then shop around

Hi,
Shutdown the computer, turn it back on then press and hold the F11 key while restarting to launch the HP Recovery Manager from the recovery partition. Then choose system recovery options.

go to this website
http://restore-disk.com/restore/hp/pavilionhp/hp-pavilion-a705w-restore-factory.html

When you purchased the computer, you should have received a set of "System Restore" CD-ROMs. Use them.

If you have lost them, telephone HP/COMPAQ, and order a replacement set of "System Restore" CD-ROMs. The cost could be $20 for the set, and $20 for courier-shipping. When the disks arrive, use them.

P.S. Backup all your music/files/bookmarks/contacts before doing the "factory" reset.

I would try to reset to factory settings first see if that does the trick these are specific instructions for a pavilion vf52 lcd, i imagine they are the same across the board....try it and see how you get on
Adjusting the Factory Recall To recall factory settings back you should follow the steps below: 1 Bring-up the OSD “Main Menu”. 2 Use the ‘+’ or ‘—’ button to move (forward or backward) to the factory recall icon and highlight it. 3 Press the ‘Select’ button to activate the factory recall action.
hope this helps, let me know if i can be of further help

This document pertains to MX50, MX70, MX75 and MX90 CRT monitors.
NOTE: To reset the monitor to factory settings:

1. Turn off the monitor by pressing the POWER button.
2. Press and hold the plus (+) button and then
3. Whith the Plus (+) button pressed, press the power button to turn on the monitor.
4. Release both buttons.