I have sorted out my problem so please ignore my request. I found out that you cannot run a repair from an OEM version of the OS. I got an authentic MS version and booted from that and did a recovery sucessfully.
I recently got in fected with the Vundo trojan which I successfully cleaned. Now suddenly my pc wont logon. Whenever I try to logon I get the message "an unknown logon error has occurred".
I have tried all sorts of "fixes" but still can't get round it.
My machine came with the OS (Vista Business) preloaded and when I boot, take the F8 option and select "Repair Your Computer" it just reboots.
I do not want to have to reload the machine as that would be very time-consuming and I would lose a lot of data.
If anyone can point me in the right direction I would be very grateful.
Thanks in advance.
My machine is an Acer Travelmate 6592 running Vista SP1.