Optical Drive Problem

Last week I rebuilt my PC with a few upgrades; a motherboard, hard drive, graphics card and RAM; and as I replaced my two hard drives with this single one I've installed XP on the new one.

I used the same ide LG DVD-RAM drive as in my last build, which did work fine. Everything was as normal during Windows installation, no hiccups and relatively painless. But now if I try to put some discs in the PC I get various problems. I'll list these below, but I know they all work fine in other PCs.

Quake IV and Ghost Recon: Advanced Warfighter 2 - PC freezes as soon as the discs goes in, I take it out and it unfreezes after a couple of seconds
Oblivion - Starts to install, gets half way through and I receive a "cyclical redundancy" error
Film played with VLC - Plays as normal, until about an hour in when it starts to stutter and becomes unbearable to watch

What's the culprit in this situation? Until I find out I'm having to download drivers and I'm downloading endless amounts of demos and buying up huge quantities of steam games as I can't install the games I'd brought in preparation ~ hardly an ideal situation.

Thanks in advance

i'm not really sure...i used to get these sorts of problems with a bad disc but all of your discs can't be bad...i would suggest to see if there is a firmware update for that drive

CRC error can be a bad disc, have you checked your discs, drive cables in securely, tried changing cables

The problem with teh disk only playing for an hour could be thermal

Is the disk an orioginal or a 'backup'? If it is a backup on cheap media, it may not be sufficiently stable thermally - especially if your drive is in a hot spot in the computer. Trying playing a DVD with the case sides off.