07 700 problems

Hi yall new to da grizzly fourm and lookin for help

Ok here my problem i got an 07 700 grizz went rode about 2 weeks ago castle nut came off and tore up da bearin. It sat on trailer for about 2 weeks waitin to get da bearin in. Finally got and replaced. Went to take bike off trailer and battery was dead. This is da first time da battery has ever gone dead or even gotten low on bike. So pushed it to shed put charger on it charged up fine. Only to find that when i turned da key on my pod screen only da back lights lit up wit no numbers or anything else also my hmf fuel optimizer wasnt comin on tried to start it and the bike will turn over but will not start disconnected optimizer and plugged back up factory way and still wont start dont hear the fuel pump kickin on either. Checked all fuses all were good but changed them all anyways. Fuel pump relay is clickin when key is turned on. Sprayed throttle body cleaner in and it will start and run for a couple seconds.

I am guessin dat there is a connection wit da screen not workin and da fuel pump not workin but i cant figure it out any and all help is greatly appreciated