I did this, rebooted and still have the same problem.
The acutal error message when I try to start the service is:
Cound not start the Intel(R) Rapid Storage Technology service on Local Computer.
Error 1075: The dependency service does not exist or has been marked for deletion.
When I Open the service and then click on Dependencies, I get the message:
Interface: Class not registered.
Are you running SP3 for XP?
Even if your system seems fine if you can't run it like many others can your system is corrupted and you would have to do a reinstall or repair of the OS.
Yes, I am running XP with SP 3 and all updates since.