This method not require access inside PC case
Requirements: USB flash disk

1. Get HP Drive Key Boot Utility from here http://h18000.www1.hp.com/support/files/serveroptions/us/download/23839.html
2. Get 32-bit Floppy Configuration Utility for Intel® Matrix Storage Manager from here
http://downloadcenter.intel.com/filter_results.aspx?strTypes=all&ProductID=2529&OSFullName=Windows*+XP+Professional&lang=eng&strOSs=44&submit=Go%21
3. Extract f6flpy32.zip to create f6flpy32.exe
4. Extract f6flpy32.exe with winrar or other similar program to create F32.IMA
5. Install HP Drive Key Boot Utility
6. Plug-in empty USB flash drive (all information will be destroyed)
7. Run HP Drive Key Boot Utility
8. Select USB flash drive letter
9. Select Create new or replace existing configuration
10. Select Floppy Disk
11. Select Image from file and browse for F32.IMA. (In browse dialog type * in file name and hit enter on KB to view all files)
12. Click Next, then Finish.
13. Reboot system with USB flash drive connected
14. Enter BIOS and under USB options set USB flash drive as floppy or forced FDD
15 On main screen set Legacy Diskette option to Disabled
16. Save BIOS setting and reboot
17. Boot from windows XP CD
18. Press F6
19. Load drivers from USB flash drive
20. Do not remove USB flash drive until first reboot