cold start problem

When my Max 97 had been stayed overnight in the garage I could not start from the first time, only after 2 or 3 times it finally started. I have been changed Air Filter and Spark plugs. The battery is 6 month old. Fuel pump is working.
My car doesn’t start at all right now.
Any solutions?

my 1997 maxima had its alternator break or something......and when it starts now, it makes this loudddddddd freaking screech for about 3 seconds and my cousins 96 does that now too.

My 97 GLE max ( does anyone else have one? ) did have trouble startin'.. i thought it was the battery.. but it was the alternator... i had to get a new alternator from nissan.... my uncle works there so i get most parts free.. and it finnaly works.... and b4 it also did that loud screetchin' sound.. but it is all good now....

now my problem is my subs and amp.. for some reason... i think somethin' is work wit my car.. i hooked up 2 12' and an amp to my head unit.. which is a stock BOSE... i don't know if anyone else with a stock BOSE head unit who hooked up some subs... if anyone has.. tell me how's it is goin' for u!