Because she isn't getting any security updates for it. You would have to format and install a clean OS and activate it, either 7, 8.1 or 10.
Yes. Regardless of genuine status, you'll still be able to get critical security updates. However, if your copy of Windows isn't genuine, you won't be able to install many updates that are exclusively for genuine Windows customers, including Microsoft Security Essentials. Microsoft strongly recommends that you get genuine Microsoft software immediately to help ensure a safer computing experience.
This fixed it.You have 2 homepages setup so it opens 2 tabs. Delete the yahoo one.
Grandmothers pc takes PC2 not DDR2