hello, this is my first post and I hope I have written in the right section. I have a problem on the OEM license windows 7 home premium x64 my notebook Hewlett-Packard Pavilion dv6-2153el. In 2010 I bought the notebook with his OEM license and now in 2015 because I had to replace the faulty HD 500GB with a 750GB. After meso the new hard drive, with 4 HP Recovery discs, I restored the notebook to the factory. The first reboot of Windows 7, I noticed that the windows update service does not work anymore. Microsoft Italy in which I called I said the cause of the problem is the license windows locked in SLP-OEM. Microsoft said the block SLP-OEM has been put by the manufacturer Hewlett-Packard, because I replaced the hard disk failure with a new hard drive. I called HP Italy denies that it put the block SLP-OEM and said it could not solve my problem. Have you ever had a hang OEM license for a simple change hard disk? You can solve this problem of the blockade of the license? There is a tool that is able to release the lock SLP-OEM?