'97 Blazer random starting

First time poster, Blazer randomly will not start everything comes on but no start--so I changed the starter--problem came back--changed neutral safety switch--same problem--changed ignition switch--problem still there--running out of patience and money--Help

when you say no start, do you mean it doesn't turn over? or it turns over but won't start? and when you say problem came back, do you mean it went away? but then you changed the NSS and it didn't go away? and same with the ignition switch? i don't mean to be rude but i need those answered first then i'll see what i can come up with.