After reinstallinf windows 7 ultimate, I get this error the establishment it is blocked. I changed my motherboard and reformat my hard drive. Have you installed a new hardware or software since you started facing this problem?ĭo you have any software installed record cleaning? If so, uninstall it, registry software is known to tamper with Windows activation technologies.Įrror code: 0xC004C003, when you try to activate Windows 7 Ultimate. ![]() (6) explain your problem clearly to the support person. (5) stay on the phone (do not select/press all options) and wait for a person to help you with the activation. ![]() ![]() How to activate Windows 7 manually (activate by phone)ġ) click Start and in the search for box type: slui.exe 4 Please run the Microsoft Genuine Diagnostics Tool then copy and paste the results into an answer here for further analysis:
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