Hi,
Thank you for posting.
To make the issue clear, could you please provide us the following information:
1. The exact error message appeared during installation
2. The error message you received when starting the Web Admin site.
Capture a screenshot
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1) Press the Print Screen key (PrtScn) on your keyboard.
2) Click the "Start" menu, type "mspaint" in the Search Bar and Press Enter.
3) In the Paint program, click the "Edit" menu, click "Paste", click the "File" menu, and click "Save".
4) The "Save As" dialogue box will appear. Type a file name in the "File name:" box, for example: "screenshot".
5) Make sure "JPEG (*.JPG;*.JPEG;*.JPE;*.JFIF)" is selected in the "Save as type" box, click “Desktop” on the left pane and then click "Save".
Please use Windows Live SkyDrive (http://www.skydrive.live.com/) to upload the screenshots and share their URLs with us.
Once get the information, we will perform some further researches and provide you some suggestions.
Thanks.
Nicholas Li
TechNet Subscriber Support in forum
If you have any feedback on our support, please contact tngfb@microsoft.com.
Nicholas Li - MSFT