windows media player in my windows 7 give only audio, no video, why?

[johanmartino]

When I want to try to play a movie from my harddisk, it can't show up. Only the audio, but no video.

How to solve this problem? It's really annoying.

I use windows 7 home premium

[-pops-]

Is it one movie or all of them?

If it is a copied commercial item there may be copy protection coming into operation.

Have you tried using another player such as GOM? http://www.gomlab.com/eng/GMP_download.html

[Boris]

Do you have the appropriate codec (for whatever format it is) installed ?

[johanmartino]

I don't know, it wasnt like this before, and I don't know how does it happen.

Do you know how can I make troubleshooting automatically?

or do you have solution?

[-pops-]

I have replied already but seemingly no notice has been taken.

If it has worked previously, carry out a System Restore to a time when it did work or restore your system from the image/backup.

[bludgard]

edit another typo

...it wasnt like this before,...

(edit:What media player do you use?)

How long has it been acting up,johanmartino?

A few days?

A week?

A month?

More?

Did it start after installing a program?After running a cleaner of some sort?Or just all of a sudden quit?

Do you use this player often to view video files?

If you could do any of the two suggestions provided by -pops- earlier you'd be golden.;)

Do you have adequate antivirus/antimalware running on your machine?