Bentley, Microstation, ProjectWise error uninstalled and reinstalled.

Dear Sir, I have troubleshooting with Bentley product on one of my company machine.

When i installed Microstation, the error message appear as the screen shoot:

1-Error=1603

2-When I uninstalled the projectwise or microstation, the Error appear

What is the problems related this? and please let me get the real resolutions about this issue.