Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Windows will not start after power outage during update

14 Dec 2013   #1

Windows 7 Ultimate x64
Windows will not start after power outage during update

Hey all

Today I experienced a power outage while windows was installing an update.
Now whenever I try to start up my computer it gets to the Windows logo, a BSOD flashes for a split second, and the system restarts.
Booting in safe mode also gives the same problem.

System restore cannot find my C:/ partition with my operating system, what seems quite weird since I first tried with the system restore on my hdd before using the one on the Windows disk. I tried a startup repair, but without any success. The logs show it performed a chkdsk so that will not work either.

I tried accessing my C partion through a couple live CDs but it doesnt seem readable.

What options do I have left to recover my system?

Thanks in advance

My System SpecsSystem Spec
14 Dec 2013   #2
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8

Try Option 2 in this tutorial. System Restore
My System SpecsSystem Spec
14 Dec 2013   #3

Windows 7 Ultimate x64

I already tried to do that, but than a message pops up telling me I first need to select an OS I wish to restore and system restore can't find my C: partition with my OS.
My System SpecsSystem Spec

14 Dec 2013   #4
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8

Use the bootable CD of partition Wizard. Download the .iso from the last entry on the website and burn that to CD. Then boot with that CD and have a look in what condition your disk is.
My System SpecsSystem Spec
14 Dec 2013   #5

Windows 7 Ultimate x64

Ok, so I'm not entirely sure what I should do in partition wizard.

It finds my drive and it's the first program that can access my C partition and files. (No idea why other live CD's couldn't)
But it does show however that my drive is 100% full, what isn't the case.

So what do I do now?
Do I try to back-up everything and reformat?
My System SpecsSystem Spec
14 Dec 2013   #6
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8

Take a good picture of the screen with your camera (not phone) and post it here. We'll have a look at it.
My System SpecsSystem Spec
14 Dec 2013   #7

Windows 7 Ultimate x64

A picture of what?
There isn't any usefull information showing on partition wizard, it's just the main screen.
No errors either, the only weird thing is that according to partition wizard I have no space left on my disk.
My System SpecsSystem Spec
14 Dec 2013   #8

Windows 10 Pro X64

I think you need to run chkdsk then if that doesn't fix it, run sfc.

How to run chkdsk or System File Checker (SFC) from the Recovery Console

  • Boot your Vista or Windows 7 installation DVD
  • When you see "Press any key to boot from CD or DVD", press Enter
  • At the "Install Windows" screen, click on Repair your computer at lower left
  • At the System Recovery Options screen, make note of the drive letter assigned to your boot drive (normally C:) and click Next
  • At the Chose a Recovery Tool window, click on Command Prompt. You will be sitting at X:\Sources directory
  • Run chkdsk or SFC
  • If you did not note the drive letter of your boot disk, you can enter bcdedit and look at the osdevice line to see what it is.
  • For chkdsk, type chkdsk c: /r and press Enter (use the letter from above if not C:).
  • For sfc, type sfc /scannow /offbootdir=c:\ /offwindir=c:\windows and press Enter (use the letter from above)
Let either run to completion undisturbed.

Vista or Windows 7: If you don't have a install DVD, you can download a legal copy here:
Windows 7 Direct Download Links
Download Official Windows Vista RTM with SP1 Setup Files (32-bit and 64-bit)

Make sure you get the same version you have installed: 32 or 64 bit; Home Premium, Pro or Ultimate.
My System SpecsSystem Spec
14 Dec 2013   #9

Windows 7 Ultimate x64

Ztruker I already did those things but without success. The system recovery screen will not let me pick a boot drive it's just blank. Anyway, I'm now trying to copy the files to an external hdd. Hopefully that will work...
My System SpecsSystem Spec
14 Dec 2013   #10

W7 Ultimate SP1, LM18.3 MATE, W10 Home, #All 64 bit
Live Linux CD/DVD

You should create a backup HDD/SSD image before attempting any repairs.

You will need to use something like a Macrium Reflect PE disc to do this.

Do you have access to a Live Linux CD/DVD (e.g. Ubuntu)?

If so, does it run on your PC?

If it runs, can you view your Windows partition contents?

If you can view the contents, try using the Disk Space Analyser to determine what is using up all of your HDD space.
You may be able to delete the offending file(s).
My System SpecsSystem Spec

 Windows will not start after power outage during update

Thread Tools

Similar help and support threads
Thread Forum
Power outage windows NOT genuine
Diagnostic Report (1.9.0027.0): ----------------------------------------- Windows Validation Data--> Validation Code: 0 Cached Online Validation Code: N/A, hr = 0xc004f012 Windows Product Key: *****-*****-2QWT6-HCQXJ-9YQTR Windows Product Key Hash: PVjSC5x6njvqunmbCY3lOD7rYDo= Windows...
Windows Updates & Activation
Windows 7 upgrade missing after power outage
Hi everyone I ran into something today I never seen before. I setup and sold a computer that I upgraded from vista to windows 7 by running upgrade option inside vista home premium to 7 home premium. Everything was working fine for 6 months. The customer brought it in my shop today and said the...
Windows Updates & Activation
Windows 7 hangs on Welcome screen after power outage (again)
I had posted all this several days ago, but for some reason, my thread vanished. Below is the compilation of two posts I made to the original thread recording the problem and what I've tried to do to resolve it. This is what I posted on September 18th: Having a tough time with my Windows 7...
Installation & Setup
After a power outage 1 program in startup folder did not start
After a power outage the only program in the startup folder on my home server did not start but when i looked at task manager it's process was running? to be clear in Task manager it was not showing as a running application but program.exe was showing in the processes tab. It was obviously not...
General Discussion
Certain Windows 7 applications slow after power outage
I run windows 7 on a laptop (Asus G74SX) w an SSD and i forgot to connect it to the battery when i took a nap. Lately my battery is not in perfect state and when this happens, reconnecting the plug won't let me resume system, i have to restart windows 7 and get the message that windows...
Performance & Maintenance

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 16:55.
Twitter Facebook Google+