Stuck on BIOS after Windows 10 clean install

Hello everyone.

I have a problem on my quite old desktop computer. I was performing a clean install of Windows 10 Redstone 1 (or anniversary update if you want). I did a custom install, allowing me to delete all partitions I had (had several partitions with different OS, all Windows). I got un-allocated space, corresponding with the total memory size of my HDD. I created a partition with a certain size. Windows created the system partition to. I moved on with the installation. Setup moved files, installed features, updates and then came the first restart, as typical on Windows installations.

(just an image to represent the step I described above)

For my big surprise, I got stuck on POST screen after the restart. More precisely, it checks the GPU first of all, then it comes POST screen where my CPU is listed, also the correct RAM size, and it keeps listing peripherals. When it's time to test the HDD, it get's stuck. Due to this, I can't get on BIOS or boot from other devices (like USB), because that's only possible after POST.

I found this image, which is quite similar to mine POST screen. Also, pressing keys to enter BIOS menu or show boot menu, are responsive. So, it's not like the POST freezes or something, but something with the disk that POST doesn't like, at all... Everything I described above, matches this picture. POST stops when reaches the SATAII line. But also shows the disk name, and also the features enabled. Just doesn't move on.

Image

Things I have tested:

  • The HDD lights on when I power on the PC. It also detects the HDD on the BIOS/POST screen. It's shown there correctly.
  • I unplugged the HDD, powered the PC, and POST moved on. As I don't have any other HDD plugged in, or USB devices, It reached the screen asking to insert some device to boot.
  • It's not a problem with ATA cable or motherboard (tested the two SATA ports that my motherboard has, it could be damaged, but its not). I tested with the older HDD that came with the PC (that has some problem, not sure what, but I can't install windows on it, boot will fail after installing, maybe some sector damaged, likely the boot sector.. it's 10 years old, I think it's normal with that age), and the POST went fine. It tried to boot the HDD that's empty. So, the problem is actually related with my current HDD.
  • Restored default BIOS setting by removing the CMOS battery for 5 minutes. 

It all seems to indicate that Windows, somehow, corrupted boot sectors of my HDD, or something like that. I really hope it didn't damage the HDD, and that formatting it will solve the problem. If it matters, I used the media creation tool, which deployed the files to USB pendrive. I also had the Aniversary Update some time installed, as I am part of Windows Insider program. Although, that installation was via Windows Update. I feel like if I hadn't format all partitions I wouldn't have this problem..

My question is: how will I format the HDD if I can't boot from other devices, like USB or DVD, as POST doesn't finish? 

The HDD is very recent, like 1 year old. I did clean installs before, never had problem.

Additionally: No, I don't have another PC to plug my HDD.

By the way, a friend of mine had the EXACT same problem, although with SSD disk. He his also stuck on BIOS, since he attempted a clean install with Anniversary update.

Found another thread on the web from this month, reporting the same issue.

Any recommendations?

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Hi Fabio,

Do not worry we will be happy to help you.

Provide us additional information for better assistance:

  1. What is the make and model of your computer?
  2. Are you trying to install Windows 10 Anniversary Update on Windows 10 or from previous operating system?
  3. If so, which is the base/ host operating system installed on your computer?
  4. Are you able to access boot options using Window 10 ISO file by creating media creation tool? Confirm to us?

Reply to the post with the required information. We will be happy to help you further.

Thank you.

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You seem to have covered everything I would have done to try to narrow down what is happening. The only thing different I would have done, during the custom install delete all partitions and then select Next. Do not create any partitions yourself. Did you do that for a reason, are you intending to install other operating systems on the remaining free space.?

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Like it said the settings are wrong. Go into the BIOS and configure the settings / save them / reboot

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Thanks for the answer.

1. The computer it's old. My parents bought it in 2006. It's Tsunami brand... can't check the exact model right now, but I have some hardware specifications in my memory (although, don't think this will help)

  • CPU: Intel® Core™2 Duo Processor E6400
  • Motherboard: ASRock ConRoe 945G-DVI
  • GPU: GeForce 210
  • HDD: It's a toshiba brand SATA II disk with 2TB of memory and 5400 rpm speed. Don't know the model.
  • RAM: 4GB installed, however I can only use 3.2GB due to Intel chipset limitation.

2./3. The system came with Windows Vista. Since then, I upgraded to Windows 7. When Windows 10 was released I upgraded it using academic licenses. Since then, I am using Windows 10 on this PC. It's about two years, because since early joined the Insider Program.

4. I don't understand this question that well... I have Windows 10 ISO on my USB pendrive which I used to install Windows 10 (or tried...). Right now, with every peripheral connected (including the hard disk), I am stuck on POST screen. Like the image above. I can't either Boot Windows or access BIOS. I can access BIOS and boot other devices if I unplug the hard disk, but this is already described above. I would like to run the check disk tool that Windows setup files include, however... I can't boot the USB and at the same time have the HDD plugged in, which is my big problem.

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Hello neilpzz

As I said, I had several partitions with different Windows installed. I formatted and deleted them during Windows setup. No partition, can't install Windows. Right? Correct me if I am wrong, but the list of disks was only showing unlocatted size. Windows it self won't create the partition. As I am doing a custom install, I am the one who tells Windows to create how many partitions I want, and where to install Windows. I am also quite sure the Next button was disable, which makes sense.

With the un-allocated space, I created a partition with 400GB or so. Windows setup created it, and additionally a system partition. From the many times I did this procedure, everything was going as supposed. After creating my 400GB partition, then I was able to move on with install. 

And yes, I was planning to have another partition where I would install Insider builds. It's good for me to stay tuned to latest improvements related with development technologies, such .Net platform and so on, but also I like to help providing feedback and have a taste of new features :)

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Hello,

Well, keep in mind that the HDD was working very well and running Windows 10. Let me tell you, that I had a partition with Windows 7, another with Windows 10 Threshold 2, and another with Windows 10 Redstone (14393). I haven't changed BIOS settings lately. Everything was working. Then format HDD using Windows setup, and ran into the problem.

I thought that Windows could change something on my BIOS settings, and as I described, I reset BIOS by removing the CMOS battery. Waited a little, and after power on, the system date was back to 2010 (date of latest BIOS version) as also I could check that some settings that I changed many time ago were on default again. This also didn't solve the problem.

Anyway, that settings should I look at, in your opinion?  

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Windows cant change anything in the BIOS.

And since you reset the BIOS settings,  you need to change the date / year to now.

Windows and programs rely on the date being current not 6  - 20 yrs ago. Since it gets the info from the BIOS

You should also check what else you want to enable / use in the BIOS before you install Windows

If you've got a sata hdd enable AHCI. You cant enable it after you install Windows

If you're using an UEFI based system, enable UEFI and secureboot If the OS supports it.

You cant change it later

Change the bootdisk to what youre booting from.. Remember to save settings after

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I know when I clean installed 10586 on a spare hard drive I just deleted all partitions and selected Next. Could be worth trying and you could use disk management to change the partition size if the install works.

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Windows cant change anything in the BIOS.

And since you reset the BIOS settings,  you need to change the date / year to now.

Windows and programs rely on the date being current not 6  - 20 yrs ago. Since it gets the info from the BIOS

You should also check what else you want to enable / use in the BIOS before you install Windows

If you've got a sata hdd enable AHCI. You cant enable it after you install Windows

If you're using an UEFI based system, enable UEFI and secureboot If the OS supports it.

You cant change it later

Change the bootdisk to what youre booting from.. Remember to save settings after

Sure, but I already changed the necessary settings, such date and time. Also tweaked the boot menu order for some tests, but wherever the HDD is (1st, 2nd, 3rd or 4th) I get stuck on Windows. Ah, and enabled some CPU Intel technologies, that were enable before. I actually NEVER changed anything related with disk on BIOS. Even when I replaced my older HDD with this new one with 2TB. I am also not sure if I can't change anything, as I need to unplug the HDD to access BIOS. So, at least, I won't be able to change specific settings of the HDD.

I will take a look. Thanks :)

But I insist, what I really need is a way of formatting the hard drive, which I can't now because I am stuck on POST screen...

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I know when I clean installed 10586 on a spare hard drive I just deleted all partitions and selected Next. Could be worth trying and you could use disk management to change the partition size if the install works.

Well, I don't know then :)

I would like to try if I could... however, as I described, I don't know how to boot Windows Setup files from USB, and keep the HDD plugged in.. Any idea?

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Last updated April 17, 2025 Views 7,774 Applies to: