windows 7 reinstall question

I have a laptop with 7 and i want to do a reinstall to fix some issues but from what i have read 7 is no longer supported. I have read things that seems to suggest that if i do a reinstall the MS activation servers will no longer activate a new W7 install. Is this true ? It's a old pc that i do not want to update because all i use it for is a couple old programs that won't work right on newer OS's but i fear if i reinstall it it won't activate. Thanks.

Don't worry, it will be activated as long as it is a legitimate copy of Windows 7.
While main stream support ended Jan 2015, extended support won't end until Jan 2020. Even then you will still be able to activate it.

Before you do anything, you should do a full image backup of the computer. Many of us use Macrium Reflect Free for this purpose. You will need an external hard drive for this purpose -- that's where you will put the backup. And you will need to create a copy of your backup software's emergency boot disk, so that if your hard drive crashes, you can do a restore to the replacement hard drive.

Once you have a good backup, you can do the reinstall, to try to fix the issues you have described; because if things get messed up, you can restore the backup and be right back in business.

Also, in case you aren't able to reactivate Windows 7 for any reason, all you need to do is restore the backup, and you're back in business.

Great, thanks all.