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I resolved the problem by setting up a new virtual machine. I was able to point the new VM to the Windows 7 files from the previously installation and everything is working now. I asked the end user to let me know if the display goes blank again but as of now everything is working.

Booting in safe mode produces the same results. It shows all the files being loaded across a black screen with white text but the screen turns black at the point when you would expect to see the Windows desktop.

Yes by new I mean less than a year old iMac. Windows 7 is activated with a valid license.

I upped video memory to 256MB and checked the 2d and 3d options but this did not correct the problem. Booting in safe mode gives the same results. After the Windows 7 screen with the colors swirling it goes to a blank screen.

I upped the Video Memory to 128MB but it did not correct the problem. It wont let me make it any higher than that. If I click on the option that says "install guest additions" I dont really see it doing anything. What should one see happen? The problem still appears to be the VM session. I...

I did try changing the number of processors from 2 to 1 and back but it did not correct the problem. Video Memory is set to 18MB. I have noticed that in these configuration screens that it always says across the bottom - "Non-optimal settings detected" but I dont see where to see what sett...

Yes I had activated WIndows 7 when I first set it up and it was working. My issue is not the same as the other person who posted on my ad as Windows has never crashed or errored out. I see Virtualbox load and Windows 7 begin to load and all the Virtualbox icons show things as running successfully ex...

Yes as you noticed the VM appears to be happy and the state shows as running. Also the Oracle VirtualBox icons in the lower right hand corner of the screen appear to be normal too including the network connection shows it has a valid connection. The VM session appears to be running fine. The problem...

OK - Attached is an updated log where I closed the window to shut the session down. Since the screen is blank/black there is no way to shut Windows down.

The log I previously attached is what is produced once you have the blank screen. From there the session will just run with no display. Since I cant see the VM session screen to shut Windows down properly, I will have to close the window which forces the session to stop. I can do that and reattach a...

To address questions asked on details of setup: Host machine: is MAC OS X LION 10.7.5 Memory 16GB 1333MHz DDR3 running Virtual Box 4.2.10 (just upgraded from earlier version hoping it would correct problem but it didn't) Virtual Machine is running Windows 7 I have attached a Screenshot of the Virtua...

I am running VirtualBox 4.2.10 on a new iMac. I set up the Virtual machine running Windows 7 and everything worked great. I went to use it a week later and now once I launch the Windows 7 virtual machine the Oracle screen appears and then the Windows 7 boot up screen appears for about a minute and t...