I have vista home premium and the last thing I remember was my pc was doing a windows update and my son turned it off while in update mode. Now I keep trying to power it on and windows starts to load but then it goes black and nothing happens. I can still see my mouse pointer working. I went to an earlier system restore for 6 days prior, and it's successful but when it restarts, it's just a black screen with a working mouse pointer. I left it alone for about 3 hours until I finally powered it off by unplugging it. I also tried a recovery disk, but it will not boot it either. Any help would be appreciated. Thank you.