I went to get on parallels today and out of nowhere vista would not work. I will attach the box that keeps coming up. I should start by preface with the following. On Monday I upgraded from 2 to 4 GB of RAM (mostly so I could run parallels faster). I installed it no problem. Opened parallels, boosted my RAM and everything worked as normal. That was on monday. Today I get on and open up Parallels again. Now before this I lowered the amount of RAM I was using just a bit. I dunno if that has anything to do with it, but I have adjusted the RAM many times before and after opening and shutting down the virtual machine. So I open it up and get the box I will post as a JPEG file. Then it comes to that screen that asks you to restart. It still didn't work. I have restarted my mac as well as parallels and still nothing. I need help! I work online and I need this.