Disk Driver Error

Hello!

I'm have a Vostro 3460. My laptop is restart many times with error 'Kernel data in page error',  'critical process die' .... 

I were called to Dell's support in my country. And he asked me test system with 'Diadnostic test' but at that time, this didn't have any error.
Then, i test many time and this have an Error Code is ' 2000 - 01 42' Msg 'Hard Driver 0 -  S/N....'

My service tag : <ADMIN NOTE: Service tag removed per privacy policy> .

Somebody help me!!

Thanks!!

BR

P/S: i'm reinstall my laptop Windows 4 times. But it's always restart when i use it... I don't know anyway to fix....