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If you’re experiencing the dreaded ‘Unable to activate Windows after hardware change’ error, don’t panic. Microsoft has made the process of reactivating Windows after a hardware change extremely easy. You can use the Activation troubleshooter by signing in to your administrator account. The administrator account should be a Microsoft account that shows your email address. …

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To install the JDK, you must set up an environment variable called Java_HOME on your computer. The variable is not case sensitive but many Java applications require it to run properly. Follow these steps to set this variable on your computer. First, right-click on My Computer and select Properties. On the Advanced tab, click Environment …

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