Just test the RAM under Windows 10, 8.1, .. why not, if you can do it simply and for longer ;-)
Is your computer unstable? There may be a problem with the RAM, but it is unlikely because the RAM is under scrutiny before being sold. For verification, you can either use a hidden system tool included with Windows, or download and launch an advanced tool such as QuickMemoryTestOK. Despite useful system tools hidden in Windows, this tool is designed to write data to any sector of your computer's RAM and then read them back one at a time. If the tool reads a different value, it means that your RAM is corrupted.