I fitted an SSD to my laptop about 2 years ago, then about 6 months ago the laptop wouldn't boot, wouldn't even switch on, thought the power supply had failed again, as it had in the past, so ordered a new power supply expecting it to fire up, but still dead. Reseated memory modules and checked every plug on the motherboard, but no cure, turned out the SSD was goosed, so much for solid state drives being much more resilient.
I have a old traditional hard drive from about 2010 full of porn that I kept hold of even though it had the click of death, was quoted £500 for a lab to swap the platters over at the time, but decided against it. Was just looking on youtube and actually seems quite simple to do mechanical repairs as long as you know what your doing. Ordered a set of combs from ebay to fit the drive, and also lucked out and found a drive with the same model, batch and firmware version on ebay. So just need to work out a way to minimise the chances of dust landing in the drive while i swap bits over.