Hey Folks, I've been having the DRIVER_IRQL_NOT_LESS_OR_EQUAL error Msg in several computers since this week. First of all I am going to tell you a bit of the Story. I have a Small Network consisting in three workstations with WinXP SP2 installed. All of these 3 computers are the exact same configuration (eMachines Model T5010): Intel PIV Processor 516 2.93Ghz 533Mhz FSB 1MB L2 Cache 512 MB DDR SDRAM Dual Channel Intel Graphics Media Accelerator 900 Intel Pro 10/100 Network Adapter 200GB 7200RPM SATA HD DVD+/-RW Double Layer 8 in 1 Digital Media Reader 7 USB ports, 1 IEEE 1394 Additional to this I installed them a wireless network card from D-Link: 108G (DWL-G520) When I first bought the computers they came with WinXP Home Ed but as I needed them for my workplace i bought the WinXP Pro licences and upgraded them from scratch. After installing the OS I used the drivers & Resource CD to install all of the drivers for the hardware components listed above. Also installed all of the hotfixes from MS Update site and all. The result: I get this anoying blue screen with the stop Msg stated above. The error does not occur always. It has happened a couple of times (in every computer) but I am concerned and haven't been able to identify what the problem is. With these 3 computers failing I can live with (sort of) but here is the deal, I have a fourth computer running Windows 2000 SP4 Server Ed wich is sending me the same error and this IS A REAL problem as it is my data server and I receive calls every couple of hours from my users telling me that the server stoped responding! The server's config is: Intel PIV 2.4 w/512K Cache 512MB PC2100 DDR SDRAM Biostar u8668PRO P4M266 SDR/DDR USB2 w/LAN MoBo 80GB Ultra ATA 7200 RPM HD 1 Firewire 3 Port 56K V.92 Modem Pro-III Flash Card Reader ATI Radeon 7000 64MB DDR Graphics Card w/TV output 16x DVD Rom Drive 48X12X48X CDRW Drive Also, I installed a wireless network card (same as the other computers). So, what do you think the problem could be?... I am attaching the minidumps for one of the Xp computers and the Win2K computer. I hope someone can help me. Thanks a lot.