hi there
Bascially my computer cant seem to boot up Vista. When i switch it on, it only shows a black screen with a flashing underscore on the top left hand corner of the screen, and budge no further than that. I've tried rebooting it several times to no avail. This problem has happened before, but rebooting used to do the trick. I am using Acer ASPIRE M5641 series, relatively new, bought less than 2 months ago.
Any help would be greatly appreciated.

Tq~