I just installed XP Pro,all is going well. All drivers reinstalled, all is well in my world

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Installed a Seagate ATA 160 GB as Master, Maxtor 30GB as Slave.

Now the problem.
I decided to see how my Knoppix Live CD preformed with all the hd space now available (also put 1 stick of pc2100 1GB memory ).Went into BIOS setup to make sure CD-ROM was set as 1st boot. When i rebooted,it went into Knoppix screen with a curser by Boot. I clicked enter, and it started dectecting my system components. When it got to USB & Firewire devices it just froze with a flashing curser. I tried again and got the same results.I did a hard shutdown, restarted and went into BIOS Setup. Everything is as it should be, removed the Live CD and rebooted. My memory count preformed, master & slave drives were shown, and that is where it all stopped. The computer at that point ceases to boot, just sits with the curser flashing and the HD light on.
Please help, I don't know what to do next
Thanks