Hi ,Stephen Athan
This issue looks like a virus issue in your laptop . Virus can come to pc via many options such as pendrive ,cd ,internet . So i would like to suggest you to install one antivirus on your pc .
Some good antivirus are like Mcafee -http://www.mcafee.com/us/index.html, Microsoft security essential- http://windows.microsoft.com/en-IN/windows/security-essentials-download
Download any one the above antivirus and update . do a complete scan of your computer .
After complete scanning of pc go to start menu ,type folder option .open it , then click on view tab . click on the option to view hidden files . untick on hide protected systems .click on . u will see all the hidden files on ur computer .
Then go to your video folder . delete all shortcuts.lnk files . now u can able to play the videos perfectly .
Check the above steps & revert me back .
Thanks & regards ,
Sambit