Hi, Can anyone please tell me why I get this kernel crash every time I boot Fedora and how I could fix it please. All I have done is installed Fedora 13 on my laptop and has ever since complained. It doesn't prevent me from using Fedora, but does crash on occasions which can be very annoying specially if I'm working on it. This is some output I get from the bug reporting tool. WARNING: at drivers/pci/dmar.c:648 check_zero_address+0x7d/0x191() Hardware name: HP EliteBook 8730w Your BIOS is broken; DMAR reported at address zero! BIOS vendor: Hewlett-Packard; Ver: 68PAD Ver. F.10; Product Version: F.10 Modules linked in: Pid: 0, comm: swapper Not tainted 2.6.34.7-56.fc13.i686 #1 Call Trace: [<c0438822>] warn_slowpath_common+0x6a/0x81 [<c09f90d8>] ? check_zero_address+0x7d/0x191 [<c0438877>] warn_slowpath_fmt+0x29/0x2c [<c09f90d8>] check_zero_address+0x7d/0x191 [<c0600f40>] ? acpi_get_table_with_size+0x58/0xa6 [<c09f91fd>] detect_intel_iommu+0x11/0x69 [<c09dc23d>] pci_iommu_alloc+0x8/0xa [<c09e90fe>] mem_init+0xe/0x245 [<c09d67f6>] start_kernel+0x1bf/0x355 [<c09d6473>] ? unknown_bootoption+0x0/0x18e [<c09d60c9>] i386_start_kernel+0xc9/0xd0 _______________________________________________ laptop mailing list laptop@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/laptop