Please Help!! Lists and libraries suddenly blocked just before migrating from SharePoint 2007 to 2010

Hi all,
I took several weeks preparing the migration of a large farm from SharePoint 2007 to 2010 using the system of restore databases and mount site collections. I've built the new farm and I have done several full migration tests to verify that all was well the
day of final migration.
The farm consists of three virtual servers: one with SQL Server 2012 and two with SharePoint Server 2010. Upon completion of the tests we've moved the servers to another network. We have turned on the servers and everything seems to work fine.
Just the day of the final migration I wanted to check the HealtReports list of the Central Administration, and when I wanted to look up an alert, the view window has not shown me anything and ribbon has appeared with all options grayed. Days ago worked fine.
Alarmed by this, I have started to check all lists and libraries in the Central Administration and the same happens. I can not view or change the items, nor add. Neither I can change the properties of the lists or libraries, as if everything was locked. I
tried on the main site collection and same thing happens, and I have tried with several user with Total Control permissions. I have also verified that the site collection was not in ReadOnly mode.
I have restored a site collection from SharePoint 2007 and have migrated successfully to 2010. Before applying visual upgrade I found that the content is also locked. It is as if he had changed anything in the configuration of the whole farm, but I can not
find what. The Event Viewer of the three server shows no errors related to this. The SharePoint LOGS not show anything unusual.
I do not know where to look and urges me to find a solution because the old servers must be out of service soon. I accept any suggestions.
Kind regards.

Finally I answer myself because I've already found and fixed the problem. Before moving the servers in farm to the another network I've unplugged the single SharePoint server from the farm database for to clone it. Apparently
this disconnection removes all the implemented solutions and the farm remains without servers. Reconnecting the servers not re-implements the solutions. When I was about to create a new farm I have seen that all solutions were not implemented,
I have implemented one by one and the system worked again.
If any of you happen reaches you, now you know what it may be due.
Kind regards!! Now I'm a happy man! ;)

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