Problem with exporting data to excel 2007

I am currently facing a problem while exporting data to excel 2007.

I am using SAP GUI version 710 which is compatible with excel 2007.

I have tried several ways such as follows :

1. Applied Patch level 1 and level 3 also

2. reinstalled SAP GUI

3. checked excel settings

Nothing worked out so far . Can anyone tell me as to why data is not getting exported to excel ?? However when I am trying to export data to excel from my colleague's system , It is working fine.