Verified answer

Go to this HP web site. It will tell you all the options

http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&...

Be aware you will loose all you personal data unless you back it up elsewhere

I'm guessing you have the recovery CD's. If so, what you need to do is,

1. Insert you recovery CD/DVD

2. Restart the computer

3. Once the computer has rebooted it should say "Press any key to boot from DVD/CD" If not you will need to change the boot order in the BIOS by pressing one of the F keys up top.

4. Once you have booted from your recovery CD/DVD you will need to follow the instructions.

Be sure when you get to the part that asks you where you want to install the operating system that you format your C: drive so the old operating system files will be deleted and you can start fresh. Be aware this will erase all your data, so make sure you back up any important files.

As soon as you switch the computer on, repeatedly press F11, which should bring you to the system recovery menu.

turn the computer off and press f11 before it starts up all the way. it'lll take you to recovery

take ur cd u got and put it in and restart ur computer then a screen will come up then it will tell u to put another cd in