Hello everyone I'm new here and recently i started having a problem which my xperia l android 4.2.2 started restarting every 30 seconds after a factory reset.

I have rooted my phone using the iroot app and I reseted it. I still have the kinguser app installed, i cannot uninstall it and now every time it boots ,after 20-30 seconds it restarts I'm using a stock Rom never installed a custom one , I'm very thankful if someone can help me here! Thanks.