Change of status (e.g. change from f1 to h1b) and adjustment of status (i485 application f1 to green card) will require to prove that you did not violate your status since you have last entered USA. Usually, USCIS only checks for last few years history, but I'd you are unlucky green card will be rejected, and you will be banned from USA for unlawful presence over 1 year. Remember the new law, if they find after 5 years that you violated F1 status, they can backdate and cancel your status 5 years, thus you will be recorded as staying illegally for 5 years. However, we don't know the future, they might remove this rule if Democrat win