Here's a link to a post that may help you out (but it's not quite the situation that you're describing): http://forums.techguy.org/windows-vista/53...tml#post5083182
In general, this seems to happen because of corrupted video drivers - so the goal is to remove the current video drivers and revert to the built-in VGA drivers. That should allow you to get into Vista and let you update the drivers. You'll also be looking for anything that will allow you to get to a Command Prompt (which is where Shift and F10 will get you).
In your case, you may have to try the "Shift and F10" thing while attempting Startup Repair. Try it at different times during each of the choices to see if one allows you to get in. Once in, you can use the steps in the link above (starting at Step 9) to switch the graphics adapter driver.
Now, all of the above presumes that this is being caused by your graphics adapter - which may or may not be the case (but the above fix is easier than most others).
If this isn't the case, then I'd have to suggest checking the system for issues. In particular this type of problem was associated with (in XP) issues with the hard drive. Since Startup Repair failed to fix it for you, then I'd have to suggest running a bootable diagnostic utility that's usually available from the manufacturer of your hard drive. In the event that there's no utility available for your make hard drive, a second choice would be Hitachi's Drive Fitness Test (DFT) for IDE drives or Seagate's SeaTools for SATA drives.
You can also obtain a free, bootable memory tester from here: http://www.memtest86.com/
Free motherboard testers usually only work in Windows (although you may be able to get one to work with a BartPE CD or an Ultimate Boot CD (UBCD). Otherwise a DOS based mobo tester runs over $400 - although you may be able to get a repair shop to do it for you. If you still have the warranty you may be able to get the test run for free at a repair center or the place that you bought it from.
Edited by usasma, 20 October 2007 - 06:39 AM.
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