I'm in the process of upgrading SharePoint to 2013. It is mostly for legacy purposes, as a reference, but most importantly, to get off of Server 2003. Also, it was 2007 Enterprise. It was a very basic SharePoint portal, so I was hoping to move it into foundation to get away from the licensing involved with Enterprise. Post upgrade, I cannot get into a site within the site. I get a correlation ID error. I suspect the page may have contained an Enterprise feature, like a Enterprise search web part or something (in 2007, I do see an Advanced Search web part on the page). Is there any way to determine which web part is causing this and turn it off in 2010 or 2013?  I've tried appending the URL with ?contents=1 and it still comes back with an error and a correlation id. 

Checkout this earlier discussed thread having suggested solution that might helps you to get in details: Web Part Error: Access Denied

You can either change the properties with PowerShell or the SharePoint object model. Please have a look on below given resources:

Changing with PowerShell  And SharePoint object model

Also have a look on this article which lets you how to attach databases and upgrade to SharePoint Foundation 2010.
Check this article which lets you how to upgrade content databases from SharePoint 2010 Products to SharePoint 2013.

Moreover, If you wish you may also try this programmed solution which lets you to migrate from SharePoint 2010 to SharePoint 2013 without any interruption.

Hope it helps you!

• Edited by Patrickjohn 57 minutes ago

Hi

you cannot upgrade Sharepoint to a different version down.

https://technet.microsoft.com/en-us/library/cc262747.aspx

https://social.msdn.microsoft.com/Forums/ro-RO/9020e99b-28b4-4bc1-9932-e3666505b132/moving-a-spd-workflow-to-production-server?forum=sharepointcustomizationlegacy

Yuu should detach contnet from your 2007 enterprise, put in a foundation version, next upgrade step by step to 2010  next to 2013 foundation

Checkout this earlier discussed thread having suggested solution that might helps you to get in details: Web Part Error: Access Denied

You can either change the properties with PowerShell or the SharePoint object model. Please have a look on below given resources:

Changing with PowerShell  And SharePoint object model

Also have a look on this article which lets you how to attach databases and upgrade to SharePoint Foundation 2010.
Check this article which lets you how to upgrade content databases from SharePoint 2010 Products to SharePoint 2013.

Moreover, If you wish you may also try this programmed solution which lets you to migrate from SharePoint 2010 to SharePoint 2013 without any interruption.

Hope it helps you!

• Edited by Patrickjohn Friday, September 11, 2015 6:34 AM

HI,this is a 3 stage upgrading from 2007->2010->2013.please check the links below that explained in very detailed about the upgrade and the steps which are required to take.

http://expertsharepoint.blogspot.my/2014/03/sharepoint-up-gradationmoss2007.html

http://expertsharepoint.blogspot.my/2015/04/upgrade-from-moss-2007-to-sharepoint.html