Hi, Based on my research, I suggest you try the following steps to see if it works. 1.Press 'Start Key/Windows Key + C' or move your cursor to top right corner of the screen to activate the Charm Bar and click on 'Settings Button' as shown in following figure. 2.The setting panel will open. Click 'Change PC Settings' from the bottom as shown. 3.You will have this PC Settings screen.

Click on General Tab. And scroll down to the bottom to find 'Advance Start up Option' as shown below and click on Restart. This is immediate restart so make sure all programs are closed and saved. 4.Your PC will reboot into Advance Start Up option.

And you will see following screen. Now simply press on 'Troubleshoot' option. 5.In troubleshoot click on 'Advance Options”.

In advance option select 'Start-Up Settings'. 6.Now just press restart button in Start-Up settings as shown below.

Your system will reboot in Start-Up Option Mode. 7.After your system is rebooted you will get this following screen. Here to choose options we have to use function keys. Now press 'F7' to select 'Disable Driver Signature Enforcement'. Now your PC will boot with Disabled Driver Signature Enforcement and you will be able to install Flashtool/Fastboot drivers. You can get this drivers from Post #2.

Now your PC will boot with Disabled Driver Signature Enforcement and you will be able to install Flashtool/Fastboot drivers. You can get this drivers from Post #2. If the issue persists, I think the ADB fast boot related driver had a compatibility problem with Windows 8.1.

If the issue persists, I think the ADB fast boot related driver had a compatibility problem with Windows 8.1. Also, I will forward this case to our product team. Regards, Kelvin_Hsu TechNet Community Support. Hi, Based on my research, I suggest you try the following steps to see if it works.

1.Press 'Start Key/Windows Key + C' or move your cursor to top right corner of the screen to activate the Charm Bar and click on 'Settings Button' as shown in following figure. 2.The setting panel will open. Click 'Change PC Settings' from the bottom as shown.

3.You will have this PC Settings screen. Click on General Tab.

And scroll down to the bottom to find 'Advance Start up Option' as shown below and click on Restart. This is immediate restart so make sure all programs are closed and saved. 4.Your PC will reboot into Advance Start Up option. And you will see following screen. Now simply press on 'Troubleshoot' option. 5.In troubleshoot click on 'Advance Options”.

In advance option select 'Start-Up Settings'. 6.Now just press restart button in Start-Up settings as shown below. Your system will reboot in Start-Up Option Mode.

7.After your system is rebooted you will get this following screen. Here to choose options we have to use function keys. Now press 'F7' to select 'Disable Driver Signature Enforcement'. Now your PC will boot with Disabled Driver Signature Enforcement and you will be able to install Flashtool/Fastboot drivers.

You can get this drivers from Post #2. If the issue persists, I think the ADB fast boot related driver had a compatibility problem with Windows 8.1. Also, I will forward this case to our product team. Regards, Kelvin_Hsu TechNet Community Support.

1.Power off your galaxy ace 2.Go to install android 2.3.6 Ace/ gt s5830-6 step to download mode by holding volume down button+home button+power button 3.Launch Odin 4.Click ''OPS'' and select ''Cooper_v1.0.ops'' 5.At the option check ''One Package'' and select firmware 6.wait about 3-4 minutes 7.Go to recovery mode by holding at the same time home button+power button 8.Go to ''Wipe data'' and select yes 9.Go to ''Wipe dalvick cache'' and select yes 10.Finally select ''reboot now'' and wait until it. Need any help please go on - succeeded.blogspot.com. Just go to google and then type 'samsung gt-s5830i odin thank you for watchiing start. For firmware go to: www.sammobiles.com www.droidtracker.com for odin. Obnovitj android samsung ace gt s5830i 236 do 404.

Yes, so we all have got the latest and greatest of all windows. But does it come with problems to your rooted phone? Yes it does!

While you connect your rooted unlocked phone in bootloader/fastboot mode, It will likely show a “Windows USB Device (Device failed enumeration)” error if you go upto Device Manager. I’ve made a step-by-step guide for a little fix which I found working on Intel Machine with USB 3.0. I don’t know whether it will work for any other machine so try it at your own risk. Install your default device drivers (For HTC, Install the HTC Sync Manager, For Sony, Use the ones you got in flashtool, etc) *NOTE* The instructions from Step 2-6 are only for machines with an Intel eXtensible Host Controller.

Look for the Intel(R) USB 3.0 eXtensible Host Controller under Universal Serial Bus controllers in Device Manager. Download Intel Official Drivers. Extract the zip file to a known location. Now we are going to replace these two files which you have downloaded with the original ones. Copy the two files, and head over to the following directory in the zip file you extracted in Step 2. “Intel(R)_USB_3.0_eXtensible_Host_Controller_Driver Drivers Win7 x64″ Copy the two files here. Accept any warning which shows by hitting ‘Replace’ Now we have to disable the default Driver Signing enforcement which Microsoft has inbuilt into Windows 8 and 8.1. To do so You have to do the following • Press Windows Key + R (or go to Run) • Type “shutdown.exe /r /o /f /t 00″ • Go to Troubleshoot –> Advanced options –> Start Up Settings –> Restart • After a computer soft reboot, hit Option 7 (Disable driver signature enforcement) • Restart your PC When the Windows starts, go to run, and type “devmgmt.msc” and hit enter.