(Disk read error) bad port how can i fix this?

I am trying to further know what's causing this problem in this computer at where i work. Turned it off a while ago then turned it on again later then i got that Disk Read Error - press ctrl + alt + delete. So first thing i went to was the sata cable i unplug it from the port and plugged it to another port (there is 4 in total). Turned it on. And now it booted successfully. So yeah. It's a port problem.

But before i did all of that in the bad port i went to BIOS and BIOS detects the hard drive. So i don't know why it won't boot the hard drive in that port.

What could have caused the port to go bad? Could it be perhaps a setting i have to configure? Or something ... ?

I think it could be dust gathering up in that port. I noticed that the computer has a good amount of dust in some areas.

I am going to see if i can get some q-tips and alcohol to clean the port up. Clean it up tomorrow.

Ok it wasn't the port after all. It was the wire checked it from both sides and one side had part of the plastic broken. All i did was plug it back into the hard drive but i put some electrical tape in that area that way it wouldn't wiggle around and lose connection.

I moved it back to the bad port again now it's working.

Wonder how that piece of plastic broke of the wire though? ..

(also i didn't clean the area)

Yeah i know i just got two of them. But i think i'm going to leave it like that. So far the tape seems to be doing the job. The wire is not really damaged it's just a piece of the plastic end that broke off. Hopefully it doesn't give me a sudden BSOD. lol

Yeah i know. But i tighten the connection to the hdd really good. Nothing will happen even if it gets hit or moved.