I know I shouldn't have deleted a folder titled C:programfilesDVD..... a few days ago I may have deleted a folder that I thougt had some old try ware software.Well.. None of my DVDs play on my PC Anymore. I even tried downloading the latest Windows Media player. I get a pop up saying"Windows Media Player cannot play the DVD because a compatible DVD decoder is not installed on your computer"I don't believe I bout any special DVD software before... And I am pretty sure, I have played regular DVD movies on this PC that I built.I am talking plain vanila playback of regular DVD Movies. Hmmm...Any ideas?Manny

Have you tried System RestoreJim

Well.. How far back can I go.. I think I deleted it about 2 weeks ago. But I am still not sure if that was it. Also I simply deleted the directory instead of uninstalling the software.BTW What happens to addons I have installed since then? I did a big Horizon England scenery install. Manny

If it was simply a delete Have you tried restoring your Recycle bin?Jim

Thanks Jim. Being the ever tidy person..I promply emptied my trash can soon after.:(Many

I restored the system to the day before I deleted some folders. But it still wouldn't work.Infact it wouldn't even work on my Home movies on DVD.Maybe I never could play regular DVDs on this PC. I have 3 PCs and this is the latest I built around Nov. Maybe I am losing it. :)Manny

Have you tried deleting the DVD player in Device Manager and rebooting to allow the system to reinstall the hardware?Jim

Hi Jim,I tried that today.. It didn't work. I think.by default the winXP or the DVD player drivers do not come with the Codec software. I may have to purcchase it i believe.Manny