when i play videos they skip

[jarool1]

alright i do alot of video processing/encoding and i think i am seriously doing something to my hardware. My problem is that video(quicktime, divx, and even mpeg) skip when they get to the halfway point in playing. Ill be watching a game trailer or movie trailer and it skips and just wont stop. I try stoping the video and replaying it and it just keeps skiping.

MY Specs:
AMD sympron 2200+ 1.5GHZ with 512MB ram and a 64MB NVidia Mx400 card.

things i have tried to fix the problem
1. ran sisandra to check if there were any problems. The mobo heat is high(58 C) . I have no idea how to stop it. I already have 3 fans running in the case (1 case fan, 1 front fan to blow the heat from the hard drives, and one on the cpu.) I also have a lot of hardware in the computer. I have a sound card 3 hard drives, 2 burners, and a vudeo card, and a ide/raid card.
2. defrag the system with diskeeper. doent help.
3. got newest forceware drivers doesnt help.
4. blew dust out
5. also while i play video i used a app to watch video card usage. FPS,core clock, Memory clock, dont budge( riva tuner)

This is the second system that has had this problem. The first one had gotten so bad that if play a shockwave file the system would start skip(amd anthlon xp 2200+ with 512MB ram, the exact same video card(used it when i switched systems))

Anybody got any suggestions as to what is causeing problems.

[Nelson37]

Need more information.

1. Are you saying this happens with ALL videos from different sources, and NOT just with videos you have created and/or edited or encoded?

2. Does this happen when playing a commercial DVD (NOT a copy) from the disk in the DVD drive?

3. Does this happen EXACTLY at the halfway point on ALL videos, and when it happens then ALL videos will skip from that point forward?

4. After the skipping starts, a different video will then play correctly until the halfway point? Or does it begin skipping immediately?

5. What stops this? A reboot, or turning the PC off for a while?

6. What happens if you boot a cold PC, open a video file, and FF to say about the 2/3 point? Does it play OK?

7. What happens if you play a very short video, say 10 to 30 seconds?

My wild guess at this point is that the problem has nothing to do with playing half of a video but is related to PC powered-on time, and is most likely a videocard overheating and flaking out. Being the only part carried over to a new machine which then experiences the same problem is very telling. This brings up

8. Did you reinstall all programs on the new PC or reuse and/or copy the old hard drive? Did you copy over the videos from the old PC? Do videos on the new PC which NEVER EXISTED on the old PC show the same problem?