Hard disk stuck after upgraded from 750ma -> 1A

wedagedara

Honorable
Sep 24, 2012
6
0
10,510
Hi,
I had a 750ma (160GB) Hitachi hard disk in my laptop (acer travelmate 4730g). I tried to upgrade it to MK6475GSX (Toshiba 1A / 640GB). But the hard disk is not work properly. Some times it work, sometimes very slow, some times stuck eventually, sometimes won't detect on BIOS. Its very hot when I touch it. Sometimes windows is gone. I can only install windows after formatting with desktop drive. It work perfectly with a desktop PC.

What is the problem?

Thank you