Regarding RAC installation

I've setup 10g R2 RAC (Clusterware, Software and a Database) using USB 2.0 External HDD.
With OCFS as the file system. Clusterware was on the internal HDD. OCR/VD, Oracle Software and Database are completely on External HDD (on OCFS ofcourse).
Yesterday I've Done the installation and checked things very well. Everything seemed to be fine after completing the installation. So I shut down the System yesterday in the night.
Problem is: Now i dont see any of the services running, except OracleOBJService and ocfsfindvol, not even the USB HDD's icon in the systray.
Any Ideas Why? and What exactly is happening?

By the way, it was on WIndows XP, ie windows 5.1

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