Have some files that wont play, but I'm sure they did before!

I wont get too longwinded about this, I'll post media info about 3 examples and any help would be appreciated. None of these files play :

Complete name : D:\HOME VIDEOS\Christmas 2004.avi
Format : AVI
Format/Info : Audio Video Interleave
File size : 1 020 MiB
Duration : 1h 40mn
Overall bit rate : 1 416 Kbps
Recorded date : 2002-12-25 03:55:11

Video
Format : Digital Video
Duration : 48mn 32s
Bit rate : 3 187 Kbps
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 4/3
Frame rate mode : Constant
Frame rate : 25.000 fps
Standard : PAL
Colorimetry : 4:2:0
Scan type : Interlaced
Bits/(Pixel*Frame) : 0.307
Stream size : 1.08 GiB (108%)

Audio
Format : PCM
Duration : 1h 40mn
Bit rate : 1 536 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Resolution : 16 bits
Interleave, duration : 40 ms (1.00 video frame)

2 :

General
Complete name : D:\MUSIC VIDEOS\Rolling Stones - Rock & Roll Circus 1968 - with Jethro Tull, Taj Mahal, The Who, John Lennon, Yoko, Eric Clapton, More.mpg
Format : MPEG-PS
File size : 655 MiB
Duration : 1h 5mn
Overall bit rate : 1 394 Kbps
Writing library : encoded by TMPGEnc (ver. 2.57.41.146)

Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 1
Format settings, Matrix : Default
Duration : 1h 5mn
Bit rate mode : Constant
Bit rate : 1 073 Kbps
Nominal bit rate : 1 150 Kbps
Width : 352 pixels
Height : 240 pixels
Display aspect ratio : 4/3
Frame rate : 29.970 fps
Scan type : Progressive
Bits/(Pixel*Frame) : 0.424
Writing library : TMPGEnc 2.57.41.146

Audio
ID : 192 (0xC0)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Duration : 1h 5mn
Bit rate mode : Constant
Bit rate : 224 Kbps
Channel(s) : 2 channels
Sampling rate : 44.1 KHz
Resolution : 16 bits

3 :

General
Complete name : D:\MUSIC VIDEOS\Beatles - While My Guitar Gently Weeps[George Harrison Eric Clapton Phil Collins Ringo Starr Elton John Live Music Video].mpg
Format : MPEG-PS
File size : 54.2 MiB
Duration : 5mn 33s
Overall bit rate : 1 363 Kbps
Writing library : encoded by TMPGEnc (ver. 2.01.30.116)

Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 1
Format settings, Matrix : Default
Duration : 5mn 33s
Bit rate mode : Constant
Bit rate : 1 076 Kbps
Nominal bit rate : 1 150 Kbps
Width : 368 pixels
Height : 240 pixels
Display aspect ratio : 4/3
Frame rate : 29.970 fps
Scan type : Progressive
Bits/(Pixel*Frame) : 0.407
Writing library : TMPGEnc 2.01.30.116

Audio
ID : 192 (0xC0)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Duration : 5mn 33s
Bit rate mode : Constant
Bit rate : 192 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Resolution : 16 bits