Original Title: DRIVER_IRQL_NOT_LESS_OR_EQUAL.PLEASE HELP! I have a HP Pavillion DT w/Vista OS. Keep getting this error even after going thru recovery process. Technical CodeSTOP: 0x000000D1 (0x00000000,0x00000002,0x00000000,0x89DD2395) nvstor.sys address 89DD2395 base at 89DCE000 Date stamp 46671961Have seen similar errors on forum w/diff codes and solutions. Just wanted to know if there was a different solution for my particular error. Thanks in advance for your help. Could you please post the answer simple enough for a technically deficient person to understand! :-)

Hi,· Which version of Service Pack is installed on your machine?· What steps you have tried to fix the issue?If you have Service Pack 2 installed, you may download & install the update from this link & check if the issue persists.Update for Windows XP (KB916595)Note: This is a reliability update for Windows XP machines. Install this update to prevent an issue in which you may receive a “Stop 0xD” error message on a computer that is running Windows XP Service Pack 2.Refer: Stop error message on a Windows XP-based computer: "STOP 0x000000D1"Hope the information helps. Please post back and let us know.RegardsDebleena SMicrosoft Answers Support EngineerVisit our Microsoft Answers Feedback Forum and let us know what you think.

Information of Bug Check Code 0xD1http://msdn.microsoft.com/en-us/library/ff560244(v=VS.85).aspxnvstor.sys is a Nvidia driver. Nvidia are well known as providers of graphics cards but they also provide other computer related hardware e.g motherboards, You need to confirm by using a kernel debugger whether the problem is caused by nvstor.sys or another driver. Using a debugger is a challenging task for those with limited computer skills and knowledge.What does this comment by you mean "w/Vista OS". Please clarify?Hope this helps, Gerry Cornell

This is a Windows XP forum. Since you are using Vista, in addition to this post you may want to post on the VISTA Performance and Maintenance forum athttp://social.answers.microsoft.com/Forums/en-US/vistaperformance/threadsColin Barnhorst