I have a Dell Inspiron 5150 laptop running WinXP Pro. I received the above bluescreen error, coincidentally or not, after Dell automatically downloaded their new support software onto my computer. After a few tries with System Restore and removing the new Dell software, I was at least able to get the system booted up without crashing. But I couldn't get online. I have AOL and the software would just hang. After many hours online with both Dell tech support (who walked me through a repair install of XP) and AOL who manually configured my modem so I could at least get online, I thought I had the problem solved. The AOL tech told me I needed to update my modem driver. Well, that presented a whole new nest of problems, because I kept getting disconnected from the server everytime I tried to download the driver from the Dell website. I finally went to my other computer, downloaded the driver, installed it on the laptop, and the laptop promptly crashed with the IRQL_NOT_LESS_OR_EQUAL bluescreen again. So, I did a system restore to revert it to the time before I updated the driver, so at least I am not getting the bluescreen, but I still am having problems staying connected. I receive errors such as "AOL service was interrupted" the minute I try to access the Symantec website to bring my antivirus up to date, and I get an error that says "the connection with the server was reset" when I tried to re-download the Dell support software in hopes that maybe it could help me troubleshoot my problem after all. I feel like a rat in a maze and don't know what else to try at this point.