Hi.....I have been working with Java pogo problems for a long time now....I can just suggest something...Unforturnatly I can't give you a solution.....Seems we are suffering from similar problems....
Go to start...Open programs...You should have Java in there...If you don't see it, you don't have it....But I think you will see it there...
If your computer is working the same as mine, you can install and uninstall as many times as you wish......However, it will not change being able to get into pogo.....
I have found two steps that do help me....I go to my java under control panel....I hit settings......Then delete files.......I then sign off and sign back on.....Then I am able to sign into pogo........
Good Luck........If you find another cure , please let me know........