Press the [b]F6 Key[/b] when the first blue screen appears with the Press F6 to install SCSI Driver listed on the bottom Left Hand side of the screen.
You then need to download the SATA Driver from HP and copy just the Driver to the Root of a Floppy. When prompted insert the Floppy and press Enter. This will install the Driver for the SATA Controller.
Of course as this HP doesn't have a Floppy natively but only as an Option you need a External USB Floppy which is far more expensive than the quoted $16.00 from HP. Of course if your friend did as HP suggested and burnt a Recovery Copy when she/he first powered up the computer you could use that.
The XP drivers for the HP6000 NB Series are located here but you really need to be sure that you quoted the correct model as there are many sub headings under the HP6000 Series of NB.
http://tinyurl.com/yzv62a
If you have the same version of XP that is loaded onto the Computer here which should be a Volume License Version of XP Pro you can make a Slipstreamed Install Disc with a product like nLite available here but you [b]Do Need The Exact Same Version[/b] of XP.
http://tinyurl.com/e2mo4
Or the Product Key on the COA will not work. If you chose to use the nLite application you will need to read it's directions here
http://tinyurl.com/hh3kb
If you do not use your friends Product Key to reload this computer you will in effect be supplying a Pirate Copy of XP and if M$ find out they are quite within their rights to issue a $250,000.00 Fine to your Friend and the person who installed the Pirate Software each. If this is the first time that they catch you out. Of course if you have been caught supplying Pirate Software Previously the fine is considerably more.
$16.00 for postage & Handling seems really cheap to me though.
Col