[SOLVED] What the Partition!? - - - laptop boots straight to BIOS ?

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Jun 7, 2025
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Laptop: Dell Inspiron 7559/Windows 10

1. A few months ago I cloned my C drive ( using diskgenius I think ). I then made a new partition in my internal secondary HDD, and placed the clone in there. I did this to practice for a future cloning, but never ended up doing it.

2. A few days ago I wanted to free up some space and decided to delete that test partition and got a warning that If my OS wasn't saved correctly my computer wouldn't run. I deleted the partition anyways since it was only a copy and rebooted the computer thinking everything would be okay. It wasn't.

3. Computer loaded into a BSOD message stating no OS was present 😡. Ran Bios several times, switching around the HDD/SDD in the Boot order, but to no avail.

4. I got desperate and switched from MBR to UEFI to see if that would help, but It didn't.

5. I plugged in an old SSD through a usb enclosure and was able to boot it's copy of Windows 11 externally. Upon inspection, nothing seems to be wrong with the internal SSD or HDD as all files are intact and accessible and both copies of the Windows folder are present ( so I'm not sure what was even deleted ) .

6. disk management - https://ibb.co/M5kK12C2 . D: Is my main internal SSD , G: Is the old clone of D , C: Is the external SSD , H: Is the internal HDD .

Not sure what I can do besides trying to clone Windows from my old SSD on to the internal SSD or HDD.
Any ideas or help would be greatly appreciated!
 
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Solution
Disabling the HDD did not have the desired effect, so I've decided to just wipe everything and start over.

My current goals are to rebuild the internal SSD partitions, reinstall windows 10 in the blank ssd , hope everything works out😛
Windows first, then "fix" whatever partitions you're talking about.

Welcome to the forums, newcomer!

Seems like you ruined the entire partition structure. Since you can get to an OS GUI using another drive, pass on a screenshot of what you're seeing in Disk Management. You should be able to boot to OS GUI if Windows Boot Manager shows up in BIOS while the SSD is the only drive connected.

Not sure what I can do besides trying to clone Windows from my old SSD on to the internal SSD or HDD.
That might be what you need to do, from my assumptions only this time, disconnect all drives off the system except for the one you wish to install the OS onto.
 
Thanks for the quick response!

I'll try disabling the Internal HDD to see if it will trigger an OS response on load. If I can't figure out how to rebuild the partition correctly or figure out another solution, then I'll go with the clone as a last resort.

I'm also doing my troubleshooting sparingly as the external SSD gets too hot in the enclosure and locks up after a few hours.
 
Disabling the HDD did not have the desired effect, so I've decided to just wipe everything and start over.

My current goals are to rebuild the internal SSD partitions, reinstall windows 10 in the blank ssd , hope everything works out😛
 
Disabling the HDD did not have the desired effect, so I've decided to just wipe everything and start over.

My current goals are to rebuild the internal SSD partitions, reinstall windows 10 in the blank ssd , hope everything works out😛
Windows first, then "fix" whatever partitions you're talking about.

 
Solution
Thanks again for all the help, I got my computer back to working order.

I'm sure there were tons of smarter ways to fix the issue, but I ended up going with the simplest solution I could find under the circumstances:

1. (Using Windows 11 externally) Deleted all partitions inside the malfunctioning internal SSD using disk management.

2. Downloaded Win 10 iso, mounted iso with Daemon tools, created a 10gb partition inside the internal ssd then extracted all files from win 10 iso into said partition, used EasyBCD to create a Win 10 bootloader using the partition as the loader, reinstalled windows back into the SSD.

The only step I got stuck on was the very last one, as I was unable to install Windows in an "empty" partition which I had previosly created in disk management. Deleting the empty partition and creating a new partiton while inside the WIndows 10 installer menu then trying to install was the solution.

PS. Didn't see your post till after i was done usafret, but will keep it saved so I don't have to rely on random tech help vids incase this ever happens again🤣
 
Thanks again for all the help, I got my computer back to working order.

I'm sure there were tons of smarter ways to fix the issue, but I ended up going with the simplest solution I could find under the circumstances:

1. (Using Windows 11 externally) Deleted all partitions inside the malfunctioning internal SSD using disk management.

2. Downloaded Win 10 iso, mounted iso with Daemon tools, created a 10gb partition inside the internal ssd then extracted all files from win 10 iso into said partition, used EasyBCD to create a Win 10 bootloader using the partition as the loader, reinstalled windows back into the SSD.

The only step I got stuck on was the very last one, as I was unable to install Windows in an "empty" partition which I had previosly created in disk management. Deleting the empty partition and creating a new partiton while inside the WIndows 10 installer menu then trying to install was the solution.

PS. Didn't see your post till after i was done usafret, but will keep it saved so I don't have to rely on random indian tech help vids incase this ever happens again🤣
Your procedure was WAY more complex than it needed to be.
 
6. disk management - https://ibb.co/M5kK12C2 . D: Is my main internal SSD , G: Is the old clone of D , C: Is the external SSD , H: Is the internal HDD .
Probably just had to make F: partition active.

diskmgmtexp1.jpg
 
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