2005 v star makes buzzing noise, but wont start.

Question edited for full 'year make model'.
Question moved from Cars and Trucks.

Does it have a security system that needs resetting after the flat battery?

Check fuses and relays.
Check fuel pressure.

https://www.google.com/search?q=2004+v+star+1100+security+system

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Jeff, Make sure battery is good and charged,check all fuses, I believe there will be a 30 amp that could be blown, other then that remove battery connections and clean, check ground connection to frame/engine also, quite common for bikes to have dirty or loose connection and loose all power.
Check the attached links forums,instruction and guides, last link is a good trouble shooting link.Good luck
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http://www.starbikeforums.com/forums/49-v-star/9371-good-battery-no-power-1100-v-star.html

Re My Yahama Star 1100 wont start Road Star Forum Yamaha Road Star

http://xlforum.net/vbportal/forums/archive/index.php/t-39135.html

How to Diagnose Motorcycle Electrical Problems Dennis Kirk Inc

most likely it is the starter motor. pretty common issue on a 10 year old car.

if it is not too big I would try a push start. if it is too big for that I would suspect the starter.

need a clymer/haynes manual or similar--u may just hav a corroded connection or a bad relay--other makes have similar books

Check the starter motor for continuity. I expect the brushes need replacing.

check your charging system components from the grounds, diodes, to the stator/generator and fuses. first check the battery with a volt meter to see if it reads any voltage going back into the battery. that will tell you it is not charging. also if you want a less reliable test, try disconnecting the ground of the battery while it is running. if it stops the system is not charging.
R/R

If you need further help, reach me via phone at https://www.6ya.com/expert/ray_6d6dc1dfa6f18dc1

make sure all of the terminals are clean, give them a good cleaning with a wire brush. If that doesnt work check the starter terminals are not loose. After that its a bad starter motor.

Battery is probably toast. Get yourself a new battery and you should be riding again in no time....also fully trickle charge battery before installation...Good luck to you....Tim

buy a new battery shelf life is not 2 yrs the only other thing that would have saved this battery is a trickle charger or battery maintainer