today I woke up, suddenly my laptop cannot boot anymore. before this already got some weird dialog prompt in windows regarding the hard disk.
I tried enter the BIOS, the only way I could boot is by changing the controller to IDE instead of AHCI.
When tried to enter windows.. got BSOD in split sec and then my laptop restart again. I tried to use the Acer recover to restore the default Windows, but setup failed because issue with my hardware.
Then I tried enter to Ubuntu using usb thumbdrive, Disk Utility reporting , SMART status: DISK FAILURE IS IMMINENT
So I'm assuming that my hdd going kaput soon, now doing backup to my ext hdd.
Anyone know what's wrong, my hdd cannot be saved ah? to add more pain, my laptop warranty just ended 12/7

is this include HDD warranty?
As you already diagnosed, it's probably bad sectors in HDD.
Possible cause including moving your notebook when there is disk activity. This including moving it before the stand-by or hibernation finish...
If you can still backup, you are not losing much. HDD is cheap these days...