admin issues

Hi, I installed XWiki standalone on windows. I went in using Admin/admin then entered my own personal details. Now I can't log in using either Admin or my account details, it always says Wrong User Name. So I uninstalled and reinstalled, same problem. Strangely after the reinstall the welcome message and other characteristics of the virgin installation don't come back. Is something left in the registry? Any tips please? TIA John Eurobase International Limited and its subsidiaries (Eurobase) are unable to exercise control over the content of information in E-Mails. Any views and opinions expressed may be personal to the sender and are not necessarily those of Eurobase. Eurobase will not enter into any contractual obligations in respect of any part of its business in any E-mail. Privileged / confidential information may be contained in this message and /or any attachments. This E-mail is intended for the use of the addressee(s) only and may contain confidential information. If you are not the / an intended recipient, you are hereby notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error, please notify us immediately, and then delete this E-mail. Neither the sender nor Eurobase accepts any liability whatsoever for any defects of any kind either in or arising from this E-mail transmission. E-Mail transmission cannot be guaranteed to be secure or error-free, as messages can be intercepted, lost, corrupted, destroyed, contain viruses, or arrive late or incomplete. Eurobase does not accept any responsibility for viruses and it is your responsibility to scan any attachments. Eurobase Systems Limited is the main trading company in the Eurobase International Group; registered in England and Wales as company number 02251162; registered address: Essex House, 2 County Place, Chelmsford, Essex CM2 0RE, UK.