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So I recently downgraded my laptop to Windows 7 from 8 and now the BIOS doesnt detect the HDD. I turn on the Laptop and it goes straight to the BIOS. How would I go upon fixing this issue? btw I had to take the HDD out and put it into another computer to instal 7 because the BIOS wouldnt detect my flashdrive either

asked Dec 29 '12 at 01:09

SuperZeoX's gravatar image


Have you tried reopening up the drive bay where the hard drive is seated at and just retry connecting it back into the connections themselves. Its soulds like it is not seating properly for the laptop to detact the drive there. It has happened to me once or twice before where it did not seat properly and couldn't find it. Once I resat the drives they were able to be found without a problem.

answered Dec 29 '12 at 07:53

Compucore's gravatar image


I know its seated properly because I tried reseating it and it reads windows 8 perfectly fine. It's only when i put any other OS on the drive it wont boot from it. I know the BIOS detects it because it tells me in the SATA config settings but it wont give it to me as a boot option.

(Dec 29 '12 at 19:48) SuperZeoX SuperZeoX's gravatar image

Or you need to slipstream the drivers for the Sata in order to recognize it in the OS when booting it up. I have seen that with my Toshiba Tecra S3 over here with windows XP as an example. The laptop that I have aldo detected the drive itself. But had a problem when loading windows XP that did not have the drivers for the Sata connection for it. Tried Ultimate edition Ubuntu and was able to format it and install the OS without a problem after that.

(Dec 29 '12 at 22:46) Compucore Compucore's gravatar image

hmm. that seems like a genius idea lol. So let me get it straight, I need to install Windows 7 onto the HDD then install the SATA drivers to get it to work in the laptop that cant read it? seems logical!

(Dec 29 '12 at 23:53) SuperZeoX SuperZeoX's gravatar image

Basically what you need to do is something like what I did with my Toshiba S3 over here. Go the manufacturer web site for your laptop. Go under their support section for drivers and download for the particular model of laptop and look for the drivers for your sata. Download it onto a usb stick or floppy disk. At boot up from the CD they should give you an option for adding extra drivers for start up. Usually F3 or something similar. Then it should ask you for the location. And install the drivers for it. Once done. It will load it up and should see the drive after that.

(Dec 30 '12 at 00:12) Compucore Compucore's gravatar image

oh well then that might be a problem. It wont let me boot from anything besides USB and that doesnt even work properly. But would my idea work? putting the HDD in another computer and installing the SATA drivers from their and then putting it into the laptop that wouldnt work?

(Dec 30 '12 at 00:25) SuperZeoX SuperZeoX's gravatar image

Not really because your installing it on another machine which the chip set may be different from the laptop that you want the OS to be on. Even if you were to use a external dvd rom drive and go that route you might have a better chance. Since it will be detecting the actual hardware of the laptop With the slipstream of the sata drivers for the laptop.

(Dec 30 '12 at 00:55) Compucore Compucore's gravatar image

ya that seems accurate. If I can find an external DVD drive then this might be successful but as of right now I dont have one :/

(Dec 30 '12 at 00:58) SuperZeoX SuperZeoX's gravatar image
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You can't install on a different computer. There may be a BIOS setting for enabling the USB.

answered Dec 29 '12 at 19:42

ClosetFuturist's gravatar image


there is no USB setting in the bios to enable me to boot from it. The USB shows up as a UEFI device which just goes back into the BIOS.

(Dec 29 '12 at 19:48) SuperZeoX SuperZeoX's gravatar image

So it doesn't show up as another disk drive along with your hard drive?

(Dec 29 '12 at 20:20) ClosetFuturist ClosetFuturist's gravatar image

it shows up but it shows up as UEFI Corsair 3.0.1 usb drive. and when i try to boot from it, it just brings me straight back to the BIOS screen. I tried it on two other computers and it works fine. I'm thinking this laptop is just broken and needs to be replaced with the warranty? At this point I have no clue why this is happening.

(Dec 29 '12 at 20:28) SuperZeoX SuperZeoX's gravatar image

Hardware failures are notorious for causing restarts. I think sending it back would be a good idea.

(Dec 30 '12 at 17:12) ClosetFuturist ClosetFuturist's gravatar image
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Asked: Dec 29 '12 at 01:09

Seen: 1,053 times

Last updated: Dec 30 '12 at 17:12