true, windows sound recorder has a 1 minute limit. what i have done in the past with that is record 1 minute of blank audio, save it, open a new file, then then keep inserting the premade 1 minute blank to make the new one as long as i need it, ie a 4 minute blank. then when you need to record, start from the beginnning, and when done playing back, delete the rest blank audio after the end and voila!
however, for basic no frills recording it's OK. Rather use a full featured audio software IMHO.