Windows 7: Windows 7 goes to blank screen with cursor after log-in

Just today I upgraded from Vista to Windows 7. This was a problem I had a few months ago with Vista on this same laptop, and I was hoping it would be fixed with Windows 7, but apparently it hasn't.
I just finished the installation and final reboot and everything, and I logged in, only to have the Welcome spinning circle on the screen for about 30-45 seconds, and then a blank screen with a moving cursor, but nothing else. After using Ctrl-Alt-Del to log out, I logged back in, and this time after 25-30 seconds of the Welcome spinning circle it logged me in.
Like I said, this was an occasional problem I had with Vista as well, but if possible, now that I'm using Windows 7 I'd like for it to not be a problem at all.
I'm running a 5 month old HP G60 laptop. During the upgrade process today I had to update my BIOS and everything else, so I think those should be fine. I just thought this would be the best place to ask if others have had the same problems and if so, what they did to fix it. Thanks in advance!

TAG
I have a HP desktop which also does this.