Before you go too far, just check your battery terminals aren't loose.

I had this problem myself - turn ignition, everything fine. Hit start and everything died. You had to turn the bike off before you could try it again.

My ground terminal was loose, took me 1 min with a screwdriver to fix it.

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Bike: 2013 XT660Z, TKC70 tyres

Mods:
Barkbusters, Scottoiler, DIY Tail Mod, DNA Stage 3, Power Commander V & O2 Eliminator, Exan X-Black Stainless exhaust, Tool tube, Ohlins linear front fork springs, Nitron rear shock, JT front and Supersprox rear sprockets, D.I.D. VX 520 chain, Adventure Spec bashplate, DIY USB Outlet, DIY chain guide, Kev's Throttle mod

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