laptop hardrive

[KELTICKNIGHT]

of late , put in a extra 512 ram in laptop and funny thing been happening after a hr of gaming the laptop shut off all of sudden without warning,the hardrive is over 56 celuis,would this cause it,any ideas

 

[KELTICKNIGHT]

did a check on drive,theres 18 per cent bad clusters and tryed to format and do new install of windows and would only format uptp 19 per cent and wouldn't go any more

 

[KELTICKNIGHT]

20 months old.was looking at 80 gig digital or 60