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ASUS T100TA Tablet: Restore Windows, Recovery Partition Deleted, Win7 Pendrive Boot Issues

baza0 10407 11
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  • #1 16739868
    baza0
    Level 12  
    Hello. I bought a tablet but somebody uploaded an android on it. I want to go back to windows, but I think the recovery partition is deleted. I booted win7 on a pendrive. In Bios I set up botting and changed to disable the option from the picture because of an error. Unfortunately, the pendrive does not boot.
    ASUS T100TA Tablet: Restore Windows, Recovery Partition Deleted, Win7 Pendrive Boot Issues ASUS T100TA Tablet: Restore Windows, Recovery Partition Deleted, Win7 Pendrive Boot Issues ASUS T100TA Tablet: Restore Windows, Recovery Partition Deleted, Win7 Pendrive Boot Issues ASUS T100TA Tablet: Restore Windows, Recovery Partition Deleted, Win7 Pendrive Boot Issues
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  • #2 16739895
    nutergsm
    VIP Meritorious for electroda.pl  
    Use an active usb hub and you must install W10 or 8.1.
  • #3 16739901
    baza0
    Level 12  
    Mistake. There were supposed to be 10 wines of course :) Active Hub? Will it not work with an ordinary pen drive?
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  • #4 16739903
    nutergsm
    VIP Meritorious for electroda.pl  
    USB hub. You need to connect a mouse, keyboard and USB stick.
  • #5 16739911
    baza0
    Level 12  
    But I don't want to boot into this windows.
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  • #6 16739917
    Karaczan
    Level 42  
    Disable Secure Boot in the BIOS and try again.
  • #7 16739920
    baza0
    Level 12  
    I just wrote in the first post that I turned it off and nothing. More than once I've uploaded windows to laptops or desktop. There is a problem here I don't know why. Maybe something else in the bios needs to be changed?
  • #8 16739969
    Karaczan
    Level 42  
    Show the Advanced tab.
    I had a T100TA once and there were 2 boot options as I remember.
    What is the screen when booting without SecureBoot?
    Pendrive certainly well prepared?
    Only 32bit editions can be installed, 64bit will not boot ...

    The Recovery partition cannot be easily deleted. It is in a separate flash layout on the disc (8GB). So maybe try with her ...
  • #9 16739985
    baza0
    Level 12  
    How can I try to run this recovery?

    Without SecureBoot this is what I put in. Two start options for android
    Pendrive rather well prepared because it boots on a desktop.
    Burnt rufus. The system downloaded from dreamspark: Windows 10 Multiple Editions 32/64-bit (Polish)

    Advanced.
    ASUS T100TA Tablet: Restore Windows, Recovery Partition Deleted, Win7 Pendrive Boot Issues
  • #10 16740060
    KOCUREK1970
    Network and Internet specialist  
    baza0 wrote:
    The system downloaded from dreamspark: Windows 10 Multiple Editions 32/64-bit (Polish)

    Asus recommends W8 or 8.1 for this

    And on the Microsoft website you can download (if you insisted on W10) legal Windows.
    And there is a double boot from some bone and probably HDD - is it a Windows flash drive?
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  • #11 16740264
    Karaczan
    Level 42  
    GRUB / Android / Linux on the W10 installation stick ?! You have some left installation.
    It is to be created from the original .ISO version of x86 (32bit).
    This ASUS has a "defective" BIOS in this respect.
    Boot only UEFIcompatible systems, and only 32bit!

    @ KOCUREK1970 W10 is a better choice, it takes less space than 8 / 8.1, and in this hybrid it is worth its weight in gold ;)
    But at least once you had to fight with touch and probably with a touchpad, because it did not want to work on drivers that 10 considered appropriate.
  • #12 16740710
    baza0
    Level 12  
    Regarding GRUB / Android / Linux. this is not on a USB stick only on the disk and from this moment the tablet is currently booting.
    I'm now trying to create a flash drive from win 8.1 using the official windows wizard. We'll see ...

    Added after 1 [hours] 33 [minutes]:

    Ok gentlemen. Managed to :) There must have been a problem with that version of windows. Maybe because it was 32/64. The system has been installed. Now I'm downloading updates and I'll see if all the drivers are there. I wonder if I would try to install win 10 this way.
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Topic summary

✨ The discussion revolves around restoring Windows on an ASUS T100TA tablet after an Android OS was installed, leading to the deletion of the recovery partition. The user attempted to boot from a Windows 7 pendrive but faced issues, prompting suggestions from other users. Key recommendations included using an active USB hub, disabling Secure Boot in BIOS, and ensuring the pendrive is properly prepared with a 32-bit version of Windows. The user later reported success in installing Windows 8.1 after creating a new installation flash drive, indicating that the previous Windows version may have been incompatible.
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FAQ

TL;DR: The ASUS T100TA is a 32‑bit‑only UEFI boot device; "Boot only UEFI‑compatible systems, and only 32bit!" Create official x86 Windows 8.1/10 media, use a USB hub, and install. [Elektroda, Karaczan, post #16740264]

Why it matters: This FAQ helps owners who can’t boot USB or lost recovery to clean‑install Windows quickly and correctly on the T100TA.

Quick Facts

How do I reinstall Windows on an ASUS T100TA when Android replaced Windows and recovery seems gone?

Prepare official Windows 8.1 or 10 x86 media, connect it via an active USB hub with keyboard and mouse, then boot UEFI. If Secure Boot blocks, disable it and retry. Use only a 32‑bit installer; 64‑bit will not boot on this model. [Elektroda, Karaczan, post #16739969]

Why won’t my Windows 7 or 64‑bit USB stick boot on the T100TA?

The T100TA uses a 32‑bit UEFI firmware. It only boots 32‑bit UEFI installers. Windows 7 and 64‑bit media fail to start. Use Windows 8.1 or 10 x86 instead. “Boot only UEFI‑compatible systems, and only 32bit!” [Elektroda, Karaczan, post #16740264]

Do I really need an active USB hub for setup?

Yes. You must connect the installer USB plus a keyboard and mouse. The single micro‑USB port requires a hub to attach all devices during installation. An active hub ensures stable power delivery. [Elektroda, nutergsm, post #16739903]

Should I disable Secure Boot in BIOS on the T100TA?

If your properly made 32‑bit UEFI USB will not start, disable Secure Boot and try again. Re‑enable it after installation if desired. This step was explicitly advised for stubborn boots. [Elektroda, Karaczan, post #16739917]

Which is better for the T100TA: Windows 8.1 or Windows 10 (x86)?

Both install and activate, but users reported Windows 10 fitting storage better on this hybrid. Some input devices may need post‑install drivers. “W10 is a better choice, it takes less space than 8/8.1.” [Elektroda, Karaczan, post #16740264]

What’s the simplest working way to create the USB installer?

Use the official Microsoft creation tool to make a Windows 8.1/10 32‑bit UEFI USB. Mixed 32/64 ISOs often fail on this model. One user succeeded immediately after switching to official 8.1 media. [Elektroda, baza0, post #16740710]

Can I still use the hidden recovery if Windows was replaced with Android?

Possibly. The T100TA’s recovery is in a separate flash layout of about 8 GB, which isn’t easily deleted. Try invoking recovery from BIOS/boot menu if entries remain. Results vary if partitions were altered. [Elektroda, Karaczan, post #16739969]

GRUB/Android keeps loading first—how do I force Windows setup to start?

Enter BIOS, place the 32‑bit UEFI USB first in the boot order, and save. Ensure the stick is genuine UEFI x86 media. If GRUB persists, disable Secure Boot, then boot the USB again. [Elektroda, baza0, post #16739985]

Will touch or touchpad work during Windows 10 setup on the T100TA?

Expect to use a mouse. Touch or the touchpad may not work until proper drivers load in Windows 10. Plan to finish setup with external input devices. [Elektroda, Karaczan, post #16740264]

Which BIOS options matter most for USB boot on this tablet?

Verify UEFI boot, correct boot order, and Secure Boot status. Only 32‑bit editions will start; 64‑bit will not. Prepare the pendrive carefully before changing firmware settings. [Elektroda, Karaczan, post #16739969]

Is a combined 32/64‑bit ISO okay for the T100TA?

Avoid mixed ISOs. A user’s combined 32/64 image failed, but the official single‑arch 8.1/10 media installed successfully. Stick to a pure 32‑bit UEFI installer. [Elektroda, baza0, post #16740710]

Can I install Windows 7 on the T100TA?

No. Contributors advised installing Windows 8.1 or 10. Windows 7 media will not boot under the tablet’s 32‑bit UEFI and lacks needed support. [Elektroda, nutergsm, post #16739895]

What is GRUB in this context?

GRUB is the bootloader you see from the previous Android/Linux setup. It intercepts startup until you reconfigure boot order or boot proper UEFI x86 media. [Elektroda, baza0, post #16740710]

Any quick 3‑step install checklist that actually works?

  1. Create official Windows 8.1/10 x86 UEFI USB with Microsoft’s tool.
  2. Connect via an active USB hub with keyboard and mouse.
  3. In BIOS, set the USB first, disable Secure Boot if needed, then install. [Elektroda, baza0, post #16740710]

Edge case: my USB boots on a desktop but not on the T100TA—why?

It can still be incompatible. The T100TA demands 32‑bit UEFI media. A stick that boots Legacy/64‑bit desktops will fail here until rebuilt as x86 UEFI. [Elektroda, baza0, post #16739985]

How do I know the install finally worked?

After switching to official 8.1/10 x86 media, one user reported immediate success, updates downloaded, and drivers installed post‑setup. That path is repeatable. [Elektroda, baza0, post #16740710]
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