Spark plugs have nothing whatsoever to do with getting the engine to turn over. They might affect whether it starts though.
I'm guessing that you mean the bike didn't start then the starter wouldn't turn the engine over any more?
If you have bought, and installed, a new battery be sure it is correctly trickle charged AND that the connections to the battery (the cable ends) are bright and shiny clean (wire brushed). If you are just now replacing a 16 year old battery--- you got your money's worth.
"sound an electric motor makes" = ????? Whirring? If it's whirring that means the starter is not engaging to the engine and that part of the starter is broken. If it's just clicking rather than whirring that usually means the battery is dead or the cables are so corroded that not enough current can pass down the cables to turn the starter.
This won't be fixed by a reboot.
Current: 1988 BMW R100GS (the 'numberplate' model)
Past: 1987 Yamaha XT350
1983 Honda CB900F
1980 Honda XL185S
1979 Suzuki GS425E