Afraid this is nothing to do with your PC, the error code is stating that the Web server at Hotmail has encountered a fault condition. The site administrator should also have received this error, and "should" be rectifiying.
My hotmail always initially and rather strangely says 'Sorry, there's a problem with Hotmail right now', and then underneath 'Try to return to Hotmail', and when I click on the latter, it always brings up my messages, no problem. (I don't know whether I should have made this a new thread, but it doesn't really cause me a problem, just a bit odd.)