Windows does tend to slow down over time, even with proper maintenance, so a lot of people decide to take the plunge and backup all of their files, reformat the hard drive, and then start setting everything up again from scratch. I rather try to avoid that since it can be a long and tedious process, but if it's reached that point then it may be the simplest option.
As to your antivirus, no, you won't lose your subscription but you will have to download all of the updates again. And if you don't complete the process before the subscription expires you will not be able to download any of the updates you lost. Then again, you should never let the subscription lapse anyway unless you're moving to a competing product...you never want to be unprotected against the latest threats.
Hope this helps,
John
Is it a good idea to reformat your computer?. I've been told its good to clean up your system but that it can also cause a lot of problems. I use xp with the sp2 update and my computer which is about 4 yrs old is getting very slow, I run antivirus and antispyware tools and also ccleaner every few days to try and keep it clean.
Also my antivirus subscription is nearly due to be renewed, if I renew it and then reformat do I lose my paid for subscription? or would it be better to reformat (if I need to) and then renew it.
Thanks

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