Stop the Timer service. To do this, follow these steps:

-Services
-Right-click SharePoint 2010 Timer, and then click Stop.
-Close the Services console.
-In Windows Explorer, locate following folder:
%SystemDrive%\ProgramData\Microsoft\SharePoint\Config\GUID
-find cache.in
open in editor type 1 save and close the file.
-services
-start SharePoint 2010 Timer service

-Done!!