hi i had my plugs changed, and since then it was hard starting, engine light is on and occaisionally (3 times now) my hold light was on and flashing...it takes quite a few tries to start it , its turning over but not starting...now i can hear the battery draining and it wont start at all...help

Why did you have the plugs changed in the first place? Was is just planned maintenance, or was there already a problem you wished new plugs could solve?...and how long was the time between the plug change and the presnet condition ?

did you get your coil wires switched up?

just went through this myself... I had to change the ignition coils on my kia. I changed the plugs and ignition wires it would start but no power at all had a friend bring his machine over and it ended up being the ignition coils 2 and 4 wasnt getting nothing. once I changed this and put everything back for the 100th time it cranked and ran beautifully
This was the first time I had ever done the spark plugs on a car much less on a Kia. and I went ahead and changed valve cover gasket, ignition coils and plugs and wires. from now on when I need to change plugs I will make sure I buy the ignition coils, gaskets, plugs, and wires before doing anything. my next project on my Kia is changing the motor on the passanger's side for the window.