If you don't want to pay for a subscription after the trial ends, don't turn to cracks. There are excellent "Free Forever" antivirus programs that work great on Windows 7 64-bit:
Use the latest version of Chrome or Firefox , as they provide better web protection than the old Internet Explorer.
Instead of looking for a risky crack, here is everything you need to know about getting running safely on your Windows 7 64-bit system, along with better, safer alternatives. Why "Cracked" Antivirus is a Huge Risk
Known for being very lightweight and not slowing down older PCs.
As a helpful peer, I have to start with a quick "heads-up": while it’s tempting to look for a "crack" to get premium software for free, using cracked antivirus software is actually one of the most common ways to accidentally infect your computer with the very malware you’re trying to prevent.
These offer robust protection and continue to support Windows 7 users.