I just installed the patches from Tuesday. After rebooting, an error screen came up. Trying to boot from that, just rebooted the machine. So I got the message I needed to use the install DVD and do a repair. The repair was done in seconds, and the machine rebooted twice. Second time worked. I'm just curious; what could have caused this? Did anybody else experience it? It's been a really long time since I've seen patches screwing up Windows. Years, in fact. Before rebooting, I installed a new version of VirtualBox. Could that have such an effect? I also installed Netbeans, and an update to Actual Title Buttons. Does anyone have a theory? My system: Windows 7 x64. Thanks.

Hi, Thanks for posting in Microsoft TechNet forums. The reason why you can’t start the computer after installing patches can be due to several factors: · The patches aren’t installed correctly. · The patches are not compatible with Windows 7. · The boot file is corrupt during installation of patches. To verify the cause of the problem, I would like to suggest: 1. Open Event Viewer, see if any error is logged. 2. Check the compatibility of patches in either manufacturer's website or Windows 7 Compatibility Center. 3. After repairing the startup problem, please create a restore point, then install the patches you mentioned one by one and see if the issue occurs. Best Regards Dale Qiao TechNet Subscriber Support in forum. If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ”