[R] RStudio blank upon opening

[Beginner]

I'm having a problem: RStudio (on   desktop comp) blank upon opening (after I update Win7). I tried different things (reinstalled R and RStudio, backuping  RStudio settings folder... etc)! C an I launch Rstudio direct from
RGui(32bit)? or some else way to solve this problem? Thanks! P.S. I  launch RStudio with Ctrl-RStudio (that is set the path to R)

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