phone turns off and sometimes restarts automatically

[MohsinK1]

I have a Samsung galaxy s1 (i9000).. I rooted it with odin and after rooting I faced this problem that If I use the phone it works normally but as soon as I put my phone on lock screen and leave it for half a minute it turns off and sometimes it restarts automatically.. Plz help me.. stuck and annoyed..

 

[bennyunderwood]

Restart, check for updates, Clear Cache and as a last option backup the device and do a factory reset.

 

[MohsinK1]

Nah brother.. It didnt helped... the problem still persist.. When I play music and lock the screen it will not shut down but as soon as i pause the music it shut downs or restarts..