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09-16-2015 03:35 PM #1
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G751JY Cannot restore to factory state
I updated my G751JY to windows 10, but before I did I took an image of the windows 8.1 C drive using Acronis True Image 2014.
After ensuring everything was working OK, I took an image of the Windows 10 system, and then restored the windows 8.1 just to check that I could go back to it if necessary.
The machine would not boot to windows - it entered the dreaded "Preparing Automatic Repair" which failed, giving the message "Automatic Repair couldn't repair your PC"
OK - this was a challenge - I'm an IT pro, with many years experience of troubleshooting computers and sorting out PC software issues. This should be easy enough to sort out.
Big fail - after two days solid effort (I'm retired fortunately!) and trying numerous options many times over, I got nowhere. Even formatting the C drive and trying to install windows 8.1 from a DVD failed with the "cannot install windows to a drive with the GPT partition type".
Doing a refresh or a reset from the recovery partition always failed too. Neither could I find any way to make a recovery DVD - is it even possible I wonder?
Fortunately restoring my windows 10 image works fine so I can always get my machine back to that state, but I am absolutely perplexed as to why the windows 8 image won't restore. It can be verified by Acronis as being not corrupt.
I was like a dog with a bone by now, but this problem eventually wore me down and I've come to a grinding halt. It's as though the windows 10 upgrade has done something very subtle to prevent the machine running windows 8.1.
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09-16-2015 06:59 PM #2
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Big fail - after two days solid effort (I'm retired fortunately!) and trying numerous options many times over, I got nowhere. Even formatting the C drive and trying to install windows 8.1 from a DVD failed with the "cannot install windows to a drive with the GPT partition type".
I updated my G751JY to windows 10, but before I did I took an image of the windows 8.1 C drive using Acronis True Image 2014.
Now you could somehow rebuild the boot records for your old windows 8.1 installation. I believe you need to use the UEFI console for that.
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09-16-2015 08:11 PM #3
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Yes, my image backup included the UEFI partition and the MBR. Restoring from the windows 8.1 image included the Cdrive, the 100mb UEFI partition and the MBR. It still booted into recovery mode.
Has anyone managed to revert from windows 10 to windows 8.1 via the recovery partion?
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09-17-2015 03:07 PM #4
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You could try the following:
1) restore all your windows 8.1 partitions, including UEFI.
2) boot from windows 8 installation dvd or USB
3) Perform these steps: www . itechs-systems . com/fix_corrupt_UEFI_partition.aspx
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09-18-2015 09:01 AM #5
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Hi Corporal - I tried your suggestion but it still booted into recovery mode. I didn't really expect otherwise, because the issue is not with the initial boot process, but it was worth a try.
I've now invoked my tried and tested "wrong assumption" theory - If you cannot solve a seemingly insurmountable problem, you are making a wrong assumption. My assumption in this case is that Acronis is succesfully restoring the image. I resized the system partition at one point during my W10 setup and the W10 image is restoring to a partition that is the same size as the image it was created from. That is not the case with the W8.1 image. I'm guessing now that Acronis is messing up the data.
Game on.....Last edited by deccauk; 09-18-2015 at 09:02 AM. Reason: typo
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09-18-2015 05:41 PM #6
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09-18-2015 10:09 PM #7
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All my saves and restores have been performed via an Acronis bootable recovery disk.
The plot thickens....
Today I resized my system drive back to what it was when I created my W8.1 image and restored that image yet again. I really did expect it to boot up normally afterwards - ever the optimist.
It didn't... it boots into recovery mode...
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09-20-2015 09:09 AM #8
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09-20-2015 12:13 PM #9
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Secure boot not relevant in this scenario - windows 10 recovers fine, windows 8 does not.
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09-20-2015 10:50 PM #10
Gps3dx PC Specs Laptop (Model) Current: G751JT | Retired: G55VW, G51JX Motherboard Inc M.2 slot Storage #1 Samsungs EVO 850 128GB Storage #2 1TB HGST Travelstar 7K1000 (HTS721010A9E630) CPU Cooler Mother Nature & Thermodynamics laws Mouse Logitech MX 518 Headset/Speakers Logitech T6060 OS Cleaned installed Windows 10 HOME x64 Accessory #1 Leap Motion
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I advise for you to read the post in my newly created thread, 2nd post... You might get some new ideas.
Asus G751JT
Samsung EVO 850 120GB + 1TB HDD 7200RPM
Cleaned installed Win 10 HOME
My Guides:
- ROG LAPTOPS: COMPLETE DRIVER LIST !
- How to install windows 8/8.1/10 on any UEFI supported laptop the PROPER way
- HOW TO (EASILY!) UPGRADE FROM WIN7 SP1/8.1 WITHOUT GOING THROUGH THE UPGRADE PROCESS ITSELF !
- HOW TO REMAP FN+KEY AND SPECIAL BUTTONS: "STEAM", "ROG" & "SHADOWPLAY"
- Win 10 x64: SETUP USB @SUPERSPEED, NO HANG-UPS! | ACCELERATES USB 3.0/2.0 TRANSFER RATE SPEED TWICE!