Actually two. The first one was simple. The owner had been tinkering with SERVICES.MSC and all I needed to do was use http://www.blackviper.com/WinXP/servicecfg.htm to find out what the default settings were and then put it all back. Yes, they paid TWICE for the service since they didn't learn the first time.
The second one was a combo issue. Not only did they run registry cleaners but a new trojan had infected the machine. We were able to save their files then wiped the machine and restored the OS from the maker's CDs. Another painful and expensive lesson about registry cleaners. I felt I could have fixed it but the registry was far too clean.
When I go to Disk Management, my hard drives are not listed. They are visable in My Computer. Nothing is listed except my DVD drive.
The reason I was in Disk Management in the first place, I plugged in my backup external drive (500GB Seagate FreeAgent Desktop) and it did not show up in My Computer, so I thought it was a drive letter assignment issue. So I go to Disk Managment and none of my hard drives are listed!
WD50000CSRTL Western Digital Caviar HD