Problem Launching Client and Designer

I have had this problem before.
I think a complete uninstall and re-install was the remedy before but now the issue returns…
I was hoping to get more clarification as to what causes this.
I have edited the conf file to reflect java 6 and 7 paths and neither one worked to remedy this.
I am using 7.5.0 (b1079) | 64-bit on windows 7 . I have many other pc’s around the house here that
can run fine various OS’s. I seem to have this stability problem only on this PC. Reasonably there must be something about my filesystem or installation that has not cooperated.
Help appreciated

You probably need to reinstall Java. I would first uninstall Java, then restart the machine, and finally reinstall Java.