QUESTION: Fix punctuation: If your PC opens the J2T file but its the wrong application youll need to change your Windows registry file association settings In other words Windows is associating J2T file extensions with the wrong software program
ANS: If your PC opens the J2T file, but it's the wrong application, you'll need to change your Windows registry file association settings. In other words, Windows is associating J2T file extensions with the wrong software program.
QUES: It is quite possible that you will do nothing during this time because it gives you a feeling of balance but no drive to do anything in particular

correct the punctuation.

CORRECTED: It is quite possible that you will do nothing during this time, because it gives you a feeling of balance but no drive to do anything in particular.
Question: In my younger days I was obsessed with guitars how little or how much it was present in the sound production
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Answer: In my younger days I was obsessed with guitars, how little or how much it was present in the sound production.
Aged in barrels for 12 months

Can you repeat this sentence, but add in punctuation?
Aged in barrels for 12 months.
input: However Phen375 is much more than just being a craving crusher
fixed: However, Phen375 is much more than just being a craving crusher!
Nike vs Adidas In 1984 Michael Jordan who was a young rising superstar at the time signed a contract with Nike after Adidas failed to sign the rookie

Can you repeat this sentence, but add in punctuation?
Nike vs Adidas In 1984, Michael Jordan who was a young rising superstar at the time signed a contract with Nike after Adidas failed to sign the rookie.