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That typically means a liquid, most likely a carbonated beverage, was spilled on or around the keyboard. Try reseting the PRAM, by holding the P+R+Option+Command keys together while restarting. Hold them for 3 full restarts.
this has stopped the looping. but theres now a few buttons that wont work and some buttons are typing two for example i press q what types is qt.
it was cleaned with water on tissue paper
is their an alternative to rubbing alcohol? i dont own rubbing alcohol
unluckly this hasnt fixed the problem
Unfortunately, water damage is a serious problem. I'm impressed there aren't any other issues with the Mac, normally a spill will damage more than the keyboard. You might try rubbing it down vigorously, then waiting a few days, then doing it again. In the mean time, the only real workaround is to use an external keyboard.