Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: ssd goes missing on uefi bios after indows 7 install

15 Sep 2013   #1

32 bit windows xp home, trying to update to windows 7 64 bit
ssd goes missing on uefi bios after indows 7 install

I have just bought a new bundle coolmaster Haf X case, asus 87-a motherboard uefi bios , intel i5 4670k 3.4 overclocked to 4.2 850w power supply nvidea gtx evga 780 and a 120 ocl solid state drive.

after formatting ssd from my old system and formatting and installing windows 7 my system booted up i installed mb drivers and grphics drivers without any problem but then on reboot my ssd suddenly disappeared from the bios leaving only my cd/dvd drive.
In ez bios there is a setting to see all sata ports and the ssd had completely gone the system booted up ok (still without the ssd showing in bios) but after several boots stopped; and would only goto the bios screen showing only my cd/dvd drive in boot options.
I reinstalled the system another couple of times and this continues to happen also in disk management (computer managemnt) the ssd now shows as being ntfs as in the first install it showed as efi

any advice would be a great help as i am now at a loss

My System SpecsSystem Spec
15 Sep 2013   #2


Unplug all other HD's and peripherals,

Boot into BIOS setup, reset to defaults, save changes. Leave overclocking turned off. (If an EFI BIOS you'll need to decide if you want UEFI BIOS vs. Legacy BIOS. If UEFI follow these special steps for Install, otherwise enable Legacy BIOS or Compatibility Support Module to proceed with normal install.) Set DVD drive first to boot, HD second, set SATA controller to AHCI, Save changes and Exit.

Then boot into Windows 7 installer DVD or flash stick burned or written using tool and latest ISO for your licensed OS version here.

At first installer screen Press Shift + F10, or enter System Recovery Options to open a Command Box, type:

SELECT DISK 0 (after confirming Windows 7 target HD #)

Next click Install Now, then Custom install to Clean Install Windows 7 to the partition you created. If it fails then report back at which step and the verbatim error message.

In addition read over these steps to understand the tools and methods which work best to get and maintain a perfect Clean Reinstall - Factory OEM Windows 7. The steps are the same for retail.

After install you can adjust partition size or Create new partitions for data, etc. in Disk Mgmt. You are creating the partition here for the purpose of wiping the HD and marking Active which overcomes certain install failures.
My System SpecsSystem Spec
16 Sep 2013   #3

32 bit windows xp home, trying to update to windows 7 64 bit

thanks Gregrocker
although i didn't turn off the over clock ( wasnt sure if i should as was adviced when i purchased it would un validate my warrenty ( its only 3 days old) )
I am using your your info on formatting and it is brilliant for my hdd which was being found but not being able to format using windows 7 instal disk (retail). though my ssd runs on uefi and so i've just found a tutorial on installs for that so am giving that a go hopefully all is going to go well
thanks again for your help i was at a total loss
will post back with results
My System SpecsSystem Spec

16 Sep 2013   #4


The tutorial explaining the extra steps required to reinstall in UEFI mode is in my post above.
My System SpecsSystem Spec
16 Sep 2013   #5

32 bit windows xp home, trying to update to windows 7 64 bit

Sorry i think i did follow your link, and now everything is working perfectly am very happy. Your information was spot on
Thanks again
My System SpecsSystem Spec
16 Sep 2013   #6


Great, Congratulations. Nice work!
My System SpecsSystem Spec

 ssd goes missing on uefi bios after indows 7 install

Thread Tools

Similar help and support threads
Thread Forum
Is the Dell Vostro 400 (my computer) and Toshiba T135 (my laptop) legacy BIOS or UEFI? Note: I have not yet updated the BIOS because I'm too lazy to do so and because it is not required.
Hardware & Devices
Migrate BIOS x64 install to UEFI.
Migrate BIOS x64 install to UEFI. Paragon Migrate to UEFI - Overview Manual:
Installation & Setup
Asus N76 UEFI - W7 64 Install Hangs on Logo (DVD UEFI Boot)
**** This issue has been resolved **** **** Look at Page 4, posts 4 and 5 **** **** You need to enable Legacy MBR by Enabling Launch CSM in the EFI Setup **** Hello all, This is my first post. I am a Windows 7 user and now (against my will) Windows 8. I bought an ASUS N76 laptop...
Installation & Setup
Problem: When install Windows 7 from the flash and Bios from type UEFI
Yesterday, I had trouble in device one of my friends Is a new device, there it type of MB GIGABYTE Model "ga-p61a-d3". When I tried to do I install Windows 7 via flash memory after the first screen choose your language and then show a message that the agreement does not exist any Drive. ...
Installation & Setup
Bootmgr missing need help clean install can't access bios or boot sele
I created this account because a) I find this forum very useful and b) this specific problem. My boss' laptop needed fixing. Its a Sony Vaio (VPCEE21FX). I boot it on and after post I get the 'Operating System not found' message. So I grab my handy dandy windows 7 disk. Boot it from that and...
Installation & Setup
What's the benefit of UEFI and install Windows in UEFI mode?
I am not sure if this subforum is the right place, if not, pleases help me transfer to the right forum... I recently just build a new setup with Asus P8Z77-V LK, this motherboard comes with UEFI boot and legacy BIOS boot support. So I tested install windows 7 in both mode, and I didn't find...
Installation & Setup

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 14:16.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App