I got Wndows xp32 and xp64 working on intel haswell on ASUS Notebook with i7 - with the restrictions which were mentioned in this topic - no intel hd graphics, no intel audio, no usb 3.0. Also for me, graphics driver 5449 and 5445 from intel ended up with BSOD with xp86 and 64. Furthermore, I have a second gt820m graphics card in this notebook, also this official xp driver from nvidia 337.88 causes bsod, Dptf patricipiant drivers and MEI install OK, but with yellow mark. Question: Could the problem be the PCI bus not properly enumerated in xp with isapnp (and accordingly in w2k)? If I look at system devices in w8.1, I have Intel 8 LPC Controller 9C43, 4 PCI Root Ports , 9C10, 14, 16, 18 and PCI Standard Host CPU bridge 0A04, all enumerated with subsys 15AD1043. In wxp, both 32 and 64, they get enumerated with subsys_00000000. I tried changing the registry to get them enumerated correctly with no success. Perhaps driver installation would be easier if subsys enumerated correctly? Or with modded msisadrv.sys instead of isapnp? As mentioned in this topic, too, there seem to be only few people with interest on FULLY working xp or w2k on haswell or testing modded driver. I would appreciate to test any modded driver (VGA, Audio, USB3.0, DPTF, MEI), because I like FREE decision of OS for everyone, which seems to get harder and harder now. Joe