Bios sometimes does not recognise my Sata HDD

"Repair Pug

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"hello good people. I have finally found a permanent solution to this ASUS HDD problem. the HDD control board in my ASUS X555L connects to the main motherboard via contact. So if there is not contact between the two boards.. the main motherhood which houses all main opponents cannot communicated with the hard-drive. I bought a similar board in ebay and upon removing the old one, I realised that the contact pins on the HDD board has been broken. I replaced with the new board which did not work for some reason. I then bought a HDD caddy . I removed my Dvd rom and put my hard-rive in the caddy and connected. Bang!!!! it works with out a need to reinstall anything. The logic is her… The optical drive bay SATA connector is directly connected to the main motherboard. so, I sacrificed an DVD for a hard-drive… my computer works fine… if I need to use a DVD or CD i will connect an external DVD drive. my recommendation is the hard-drive caddy

https://www.ebay.com/itm/SATA-2nd-HDD-SS..."

"Hey everyone I was having the same problem on a Asus X556U.

The HDD sometimes was not detected, I found out that the connector was not making proper connection all the time. The connections became really thin and they needed to be strengthened

Instead of replacing the HDD board I just removed the DVD and bought a cheap HDD caddy."

Hello I have the same problem. I did clean the HDD and the computer boots in windows. HDD was scanned and says its error free. This morning i turned the laptop on and no HDD was recognized but after applying pressure above the connector of the HDD board (near alt car key) it booted normally after the second try. Has your issue persisted? I'm thinking of strengthening the connector joints as per this video https://www.youtube.com/watch?v=DXrZd5cF... because the solution above was only temporary. Have you tried doing this or your issue was solved the first time? or did you replace the HDD board? Thanks in advance

"Turns out there is a ribbon connecting the SATA daughter-board and the motherboard on the Asus R556 series laptops which is faulty. There are two fixes; reflow the traces at both ends of the ribbon (it’s easy to identify, as it crosses the HDD caddy), or purchase a new ribbon, daughter board and ribbon connector (for the motherboard interface).

Personally, I am inclined to agree with you, ‘Planned Self-Termination’. :/

….and Asus used to be so good too. :("