Most of those methods there do NOT work actually (many are considered "myths", most are very old and not applicable to modern HDDs). The possibility of success is like 0.001%, depending on the type and state of HDD malfunction. The "freezer trick" will further damage the HDD internally and its not recommended if you are trying recover very important data. Its impossible to revive HDDs from the following failures:

1. Firmware corruption (spin-up but data inaccessible, incorrect drive name detected)
2. Head crash (cannot detect, data inaccessible with metal scraping sounds)
3. Dead controller board (no activiity, no spin-up, usually blown controller IC)
4. Failing media (more bad sectors build-up, data inaccessible, platter contamination)
5. Mechanical failure (spindle motor stuck, voice coil jammed, head fly off, etc)

The first 3 are common failures on modern HDDs. Nowadays HDDs use FDB motors (no more ball bearing ones) and have better longevity. The freezer trick only works with ball bearing motors. As for platter contamination several manufacturers got into that situation before (IBM and Maxtor included) some years back.