OK yeah I had the same problem but the other way around, it would get to the last stage and it's where it installs the display
driver and the screen goes black and it meant to come straight back on but just stays blank, no reboot, no error screen just a blank screen, build 7048 and onwards have been great for me.
I only had that problem the previous build that included the Nvidia pre beta
drivers and the only way I managed to install half the time was to put an older video card while it completed the install.
If you have any overclocks that might effect it as well and you could try removing any add ons or anything that doesn't need to be connected to see if that helps.