Yes, I have a Dell Inspiron 531 and since upgrading to Win 7, the computer periodically freezes up, most of the time after it goes to sleep. I have to do a hard boot-up. I have worked a number of times with Microsoft Help, and the latest one told me to go back to Dell to update all the drivers and BIOS for graphics, video and monitor. I downloaded the available BIOS and drivers for my Dell model off of the Dell Website, but can't find anything for my specific monitor, the Dell E228WPF, and I'm not sure if the issue I have is related to the monitor or not.
Thanks for your help.