Can you provide your error messages you are seeing in <ConfigMgrInstallationPath>\Logs\amtopmgr.log and <ConfigMgrInstallationPath>\AdminUI\AdminUILog\Oobconsole.log.
If you are not able to perform collection based power or connect via the Out Of Band Console, there is a high potential that you certificate was not created problem. On your issuing CA, make sure you see a certificate for the vPro client and that the FQDN that the certificate was issued to is the FQDN of the vPro Client.
SCCM was unable to request or issue a Web Server Certificate on behalf of the vPro client during provision or the Web Server Certificates was issued to a different FQDN then the vPro Client.
Verify that you have created the Web Server Certificates template on your Certificate Authority and that your SCCM Primary Site Servers has the appropriate permission. SCCM SP1 Help File Article: "[Step-by-Step Example Deployment of the PKI Certificates Required for AMT and Out of Band Management|http://technet.microsoft.com/en-us/library/cc161804(TechNet.10).aspx]"; Section: "Preparing the Web Server Certificates for AMT-Based Computers".
Verify that you have configured the certificate template in the Out of Band Management Properties: General Tab. SCCM SP1 Help File Article: "[How to Configure AMT Provisioning|http://technet.microsoft.com/en-us/library/cc161966(TechNet.10).aspx]"; Section: "To configure the out of band management component for AMT provisioning"; Steps: 7-8.
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