So i have a Dell XPS Gen 5 that i've had since May and after 2 months i started getting the BSOD screen with IRQL NOT LESS OR EQUAL. I called DELL (Hell) and they basically sent me replacement parts: 1 vid card 4 memory modules and a whole motherboard now everything is swapped out and replaced and I reformatted Windows XP Home and i've only loaded a few things on the pc: Kaspersky AV 6 Flatout 2 Counter-Strike Source with HL 2. The problem only occurs when I try to connect to a server in Counter-Strike Source. I can play Flatout 2 and play it multiplayer online with no problems. Before reformatting I also had problems when playing online with Jedi Knights: Jedi Academy. Here are the last 3 address in the message: 0x000000d1 (0x88698070, 0x00000002, 0x00000000, 0x8631d26e) 0x000000d1 (0x8869fce5, 0x00000002, 0x00000000, 0x8633826e) 0x000000d1 (0x8769318a, 0x00000002, 0x00000000, 0x8631226e) Other peripherals i have plugged in are: Soundblaster Audigy 2z Dlink 520+ wireless adapter Nvidia Geforce 6800 I've already tried swapping slots on the PCI devices and also did the memory stick swap and tests, but i'm starting to think that it's not a hardware issue? The only thing i can think possible are: 1) Some sort of IRQ conflict being triggered once I click on a server in Counterstrike 2) Bad wireless card 3) Bad Sound card or 4) Bad device drivers with one of these peripherals. But since i've downloaded all of the latest drivers and have a fresh install with Win XP and updated all of my Bios's and chipset drivers, i can't think of anything else. Oh yeah Kaspersky had found 23 viruses originally when before I reformatted twice, is it possible that the virus is still on the system even if i reformatted the HD 2x? Thanks for any and all help and responses. I'm totally stumped on this issue.