Hi luciarma,

Welcome to the Community.

If the issue has started recently, I would suggest you to perform system restore using the link mentioned below:

http://dell.to/VRG2ad

NOTE: System restore will remove the applications installed after the restore point but will not delete any files.

If the issue persists, update the antivirus program and perform complete scan to ensure it is not a virus issue.

Also, update the operating system and Directx for the system.

Restart the system and if same issue appears, perform a clean boot and let me know if the error comes up. Click the link mentioned below for more information on clean boot:

http://bit.ly/12PfxI

Thanks & Regards
Manshu S
#iworkfordell