0150 Speed Triple No Spark

Hi everyone
So last week my 2005 1050 s3 didnt start out of the blue, it didn't have enough charge to spin over fast enough, so initially I thought I must have left the ignition in parking light mode, and I charged my battery and it started fine. It didn't start the next time I came to it, so I checked whether the battery was getting charged when it was running, to find out it wasn't. I ordered a new rectifier/regulator and rode to work a couple of times with my battery charger in my bag, and charged the battery each end of my commute. The last time I used it I went further than normal, and it started to splutter; the dials spun around; then it died. This last time the tacho actually stuck at 8k if that helps identify things. I got it home, then recharged the battery (it's new at this point), and put the new rectifier/regulator on, thinking it would start. Now it's got no spark, and I'm not sure how to go about problem solving where the issue might be. I've read about various things, like checking the pump relay, whether the injectors and coils have 12v and to check the stator, but could do with a pointer on how to do it!
Thanks a lot
Gc