Attempt a clean installation of your OS preference.Other than that, my guess is that your machine is dying, and no amount of money would fix the components.Computers are really quite inexpensive these days, so I would recommend that you consider that choice first.Best of luck.../rgc On Tuesday, July 10, 2018 9:50 PM, "admin at siegel-tech.net" <admin at siegel-tech.net> wrote: Hello For the past three years I have my computer been set with with multiple virtual machine assigned to a GPU using QEMU/KVM and VFIO. For the past year CentOS as been the host computer, it has been reliable. This summer I switch to the Centos Enterprise package, it been work for several weeks until Friday, sometime over the weekend the console portion of the boot process does not display. I have one Windows 10 virtual machine book, but the EFI boot screen does not display and the Windows circle do not dance on the screen. I am unable able to boot my other virtual machines, they get stuck the monitor just flash on and off. I performed a major upgrade on the 4th of July it work through Friday. I have used the history command in yum to undo the update the problem persisted. I have qemu-kvm-ev-2.10.0-21.el7_5.4.1.x86_64 and libvirt-3.9.0-14.el7_5.6.x86_64. I can post a configuration if you think it will help, I have regenerated a xml file from partially working Windows 10 machine. What has changed in the last week. I have tried many things but not sure were to go from here. Thank you Aaron _______________________________________________ CentOS-virt mailing list CentOS-virt at centos.org https://lists.centos.org/mailman/listinfo/centos-virt -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos-virt/attachments/20180711/19395fdc/attachment-0006.html>