Having some video troubles

[chronokefka]

Since I'm a little lazy this morning I'll just copy my post from AT..which didn't get any helpful responses.

Well, something broke on my computer today. Not sure if it was my X700 or a collection of drivers. Video playback won't work at full acceleration anymore. I have to scale it back to 3 ticks from the left to get any playback at all, and even then some files are still messed up: http://img.photobucket.com/albums/v457/chronokefka/playbackissue.jpg
So, how would I go about fixing it completely? Thanks in advance for any help.

Original attempts at finding the issue involved uninstalling and reinstalling codecs, The Core Media Player and DX9. I can get video playback of most files in VLC, WMP and MPC as well, but once again some files have the double-image still.
System Specs:
Venice 3000+ 312*8.5
2x512 OCZ Plat Rev1 2-3-2-5@206
XP Pro SP2
HIS X700 256MB was OC'd to 460core 480mem, rolled back to stock
Asus A8N-E 1011 BIOS

[yuckfou]

power supply?

[chronokefka]

A very cruddy generic 450w that came with my case...-_- the voltages are usually pretty stable..if a bit low.

[nn_step]

if you have any soul within your body that is part Overclocker please actually put a REAL PSU in your rig... Otherwise you might as well have bought a DELL.

[chronokefka]

I wish I could afford one ;_; I was totally tapped out after buying the rest of the parts...then I had other expenses..then I got fired...I'm buying a good PSU as soon as I have the money..but for now I'm stuck with this crap.