help s4 i9505

[irfan gsm]

Assalam O alaikum

i have strang problem in galaixy s4 i9505
when im using it its restart,,,

1_ i restor facrty but not done
2_try to flash but not done
3_check with other orignal bettery but same problem

any one have good idea please share...

thanx

[irfan gsm]

its really urjent please some buddy help....