the standard this to do is to check all connectors for corrosion and good contact including the battery terminals and earth points. Also worth checking the connector for the ecu and all the fuses (all three fuse boxes), pull them one by one and use a meter, do the replays as well. Make sure you have the right size battery.. if you food it, it won't start!! you'll need to pull the fuel pump fuse and turn it over until you clear it.