by the way, if the files are copied they play perfectly well on another computer
WMP, real player, vlc, itunes etc all load OK and play the audio but there's no video, just a blank screen (static for itunes)
all working fine a few days ago.
if I save something from youtube via real player I can play it on real player. These were saved as .flv
same vids won't play with wmp, VLC, itunes etc
m-peg, avi won't work with anything
Since last working well I have:
installed Epson pro 3800
logitec cordless mouse and keyboard
new EIZO monitor
disconnected an old computer that was sharing my old screen/speakers
system restore to a time when it worked
re-installed VLC, wmp no change
changed monitor cable
changed resolution of screen
pulling hair out
photoshop etc works fine there are no other viewing issues.
youtube can be viewed
no error messages appear
if I try to use windows movie maker the files won't play (photo compilations) in the preview window nor when saved and played via other players
vids recorded with w movie maker won't play on anything
DVDs wont play on anything
I ran video inspector on one of the avis and it had a tick against the video codec
I'm at wits end........
Thanks in advance if anyone can help!