I've been able to Dual Boot like you want any number of times but there are always tricks with the settings. That's why I asked for camera snaps since we can often spot the needed ones. Otherwise we are blind since every mobo is different.
Newest generation of laptops are specifically designed for "Windows 8" and may came only with USB 3.0 ports. Usually all "USB 3.0" ports on a laptop will be permanently set to XHCI mode ( native USB 3 mode ) which is supported out of the box by "Windows 8" but not "Windows 7". I assume that is the situation with your laptop. Try installing from a DVD if there is a functioning optical drive in the machine.I'm having near identical trouble and have searched for hours for a resolution only noone else seems to have mentioned my specific scenario. When I attempt to install Win 7 via USB on a brand new laptop running Win 8, I get the message during installation that it can't find any drivers.
It will help us if you please specify the exact model number of the laptop.
I tried with USB, and DVD through USB Optical drive, since my laptop does not have a Disk drive...
curious about this possibility, Get an HP up and running with a windows, then swap HDD after changing BIOS to support legacy soft? I wonder if that would work or if it would encounter the same issue where it can't locate necessary drives
ps. Laptop is Hp Envy 15 J084ca
Like I said I have been able to get it installed or Dual Booted every time with the correct settings which can be tricky. You may find others who've already been through it for your model if you ask Google clearly en ough
Let me know when you are ready to cooperate and we'll solve your problem just like we do everyone else who cooperates. Start at the top and perform the steps you skipped. I'm still waiting to see every BIOS setting for UEFI, CSM. Legacy with choices expanded.
Use Option One from UEFI Bootable USB Flash Drive - Create in Windows with a fresh Win7 ISO for your licensed version from reinstall tutorial in my signTure pic below if you haven't already.
@403Phaze
Here is the official spec of your laptop : HP ENVY 15-j084ca Notebook PC Product Specifications | HP® Support
According to the spec, there are four USB ports and all of them are "Super Speed USB 3.0".
Source : USB 3.0 - Wikipedia, the free encyclopediaThe "SuperSpeed" bus provides for a transfer mode at a nominal rate of 5.0 Gbit/s, in addition to the three existing transfer modes. Accounting for encoding overhead, the raw data throughput is 4 Gbit/s, and the specification considers it reasonable to achieve 3.2 Gbit/s (0.4 GB/s or 400 MB/s) or more in practice.[4]
"SuperSpeed USB 3.0" requires XHCI operation mode which is not supported in "Windows 7" by default. Installation of drivers required for these ports to be recognized in "Windows 7".
If the installer can't access the USB ports, it is not going to detect anything connected to them - whether it is USB flash disk or USB optical drive.I tried with USB, and DVD through USB Optical drive, since my laptop does not have a Disk drive...
Better way is to create a "WinPE 4.0" or "WinPE 5.0" bootable USB which will recognize "USB 3.0" and run "WinntSetup" from it to install "Windows 7". This will be a little difficult for beginners and requires patience but if you are interested, i can provide step by step instructions.curious about this possibility, Get an HP up and running with a windows, then swap HDD after changing BIOS to support legacy soft? I wonder if that would work or if it would encounter the same issue where it can't locate necessary drives
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