Ram regulator misbehaving DDR3 VTT voltage Tps 51216

[shakib200]

The ram regulator produces VTT voltage of 0.65V and the display comes. When we restart the laptop the VTT voltage becomes 0.75 and no display.[Used same ddr3l ram].
Also, it becomes 1.35 V on the ram coil and all are okay but after restarting Voltage becomes 1.5V with no display.

[SMDFlea]

Laptop model number, motherboard model number ?