Problem with OC original DVDs

Hi
Whenver I put disc 1 or 2 of OC season 1 (pal) into my computer, it ignores them (no autoplay). When I go into my computer it donst show the disc being in(it shows defaul drive name, but if I try to open (or play or burn ect) my computer freezes, end tasking works but then I cant get explorer back (even I click run and write explorer nothing comes up but it show exlporer in proceses).

The funny thing is though that only yesterday disc 1 worked (hadn't tried disc 2 yet)and I ripped eps 1 and 2 to my comp. Any help would be very appreciated, feel free to ask for any extra info. Oh, um thought this might be helpful, the last time disc 1 worked on my comp I was ripping ep 3, but my comp run out of space in the middle and I got an error. Since then I have freed 11 gig, and tried many more times.

Oh and after first time disc didnt work in comp I coulndt restart, I got black screen just before login screen comes that I left on for half an hour twice. I resolvesd that issue by selecting "Start windows with last know good configuration" or something.

Oh yeah this is also probably very important, I ripped eps 1 and 2 of an image I made off the disc. I needed to delete the image though to free up space. This all started next time I put the disc in.

Sorry about bad order of events, but where I am it is ten past 1 so I'm kinda tired. Any help would be nice, feel free to ask for any extra info.

Thanks.

DVD drive: Pioneer DVD-RW DVR-110D (with firmware from a few weeks ago or so)

Intel Pentium 4 2.81 giga hurtz or whatever.

Windows XP proffesional 2002 with Service Pack 2.

512 mb ram.

 

Sorry about double post but I though this info might be useful:

I used DVD decyptor to make image.
Magic DVD ripper to rip eps to comp.

Thanks.