Windows not functioning (0xc000007b)

[orchiley]

Recently I just upgraded my computer with higher end parts. Everything seemed to have been working perfectly, however, sometimes programs would not load, like freeze. Even though I’d still be able to drag my mouse across the screen perfectly. In task manager everything was normal and there was no high RAM or CPU usage. Then my monitors just went black while my PC was still on. So I restarted it and on the screen it said “a disk read error occured; press Ctrl+Alt+Del to restart” so I did that and was put back on the same screen three times before it started troubleshooter automatically. The troubleshoot failed a few times then loaded into Windows finally. At this stage everything looked normal, then a bunch of error messages popped up saying “The application was unable to start correctly (0xc000007b). Click OK to close the application” and another error saying “0xc000012f”. Now whenever I press the start bar, everything is highlighted grey, and I am unable to press anything. My sound icon also has a mute logo next to it and when I press it, it says “The application was unable to start correctly (0xc000007b). Click OK to close the application.”

Can someone please help me understand wtf is going on? I’m under the impression that my Windows 64bit is now 32bit somehow. I would check but I can’t check my system specifications. I’ve tried re-plugging all my hdd’s and ssd but nothing seems to work. I’m very restricted to searching my PC.

 

[Colif]

Which parts did you upgrade? Was it motherboard or CPU?

If so, did you fresh install windows 10 afterwards?

win 10 can't swap to 32bit without a full install so that is unlikely.

 

[orchiley]

I upgraded every component other then the GPU. After switching motherboards I had lost my genuine copy of Windows so I had to contact support for a new one, which I received. It was Windows 10 Home 64bit and seemed to be working just fine. After unplugging all my HDD’s I’m certain it’s the OS at fault

Sorry if this isn’t the way to reply to messages. There is no reply option on IOS

 

[Colif]

You answered in right place

So did you fresh install this new copy on PC or just put the licence into PC and activate it?

Since you basically have a new PC you would be best reinstalling win 10 as otherwise it has all the old drivers that matched old hardware

 

[orchiley]

You answered in right place

So did you fresh install this new copy on PC or just put the licence into PC and activate it?

Since you basically have a new PC you would be best reinstalling win 10 as otherwise it has all the old drivers that matched old hardware

 

[orchiley]

A Microsoft’s assistant remote controlled my PC and simply entered a new product key. Which activated my Windows. But I don’t think that’s the problem, because this happened last week and it was fine until now

 

[Colif]

At any stage since the upgrade of hardware, did you boot from a win 10 Installer on USB or DVD, delete all the partitions on the drive, and put windows 10 on again?

That is what I am asking as if all you did was move the drive onto the new motherboard, and all MS did was put in a new licence to activate windows, your problems are likely caused by all the drivers that matched your old PC still being in place.

 

[orchiley]

I haven’t touched any of the boot settings at all

How do you suggest I remove those drivers and update/download the ones I need? Thanks for your replies btw. Much appreciated

 

[Colif]

OK, so all you did was move hdd over and run windows. That is why its doing all of this to you. What I would do is make copies of anything you want to keep on C drive. As after a reset, it might all be gone.

removing drivers manually just leaves the chance you will miss one. Better to reset and force windows to find new drivers.

Now you could just run a reset, it might be all you need as it will put a new copy of win 10 onto the drive and force windows to get all new drivers. You will need to reinstall all your programs again, but you can save files and settings. The Files it saves are the contents of library folders like Documents, Music, movies, pictures. Settings = logins and desktop settings. It also forces windows to get all new drivers which is main reason we are doing this.

You can find it in settings/update & security/recovery
there are 2 choices for reset.
Keep files and settings (see above)
Wipe Everything - this reinstall win 10 like its brand new
Both forms of reset only touch C drive, so if you had another hdd in PC, it would be left alone by the installer.
Both forms of reset won't ask for licence details.

Where to get new drivers from depends who made you PC. Since you replaced all the parts, you should know what motherboard you have. Visit the web site for the motherboard and generally under support area it will have a driver section. Look there and see if any new Win 10 drivers.
Win 10 is pretty good, it can recognise most hardware now and will find drivers... they just aren't often the latest ones.

Now if the reset fails (as sometimes they do), you will need to so a full install. On another PC, download the Windows 10 media creation tool and use it to make a win 10 installer on USB

Fresh install won't save anything on C so copy everything off you want to keep
change boot order in BIOS so USB is first, hdd second
boot from installer
follow this guide: http://www.tenforums.com/tutorials/1950-windows-10-clean-install.html

when you reach the screen asking for licence, click "I don't have a key" and win 10 will continue to install and reactivate once finished

On the screen where you choose where to install win 10, if it gives you an error about GPT drives, delete all the partitions on the hdd and press next. If it still gives error, cancel out of the installer and restart PC and start installer again, it will accept next on that screen this time (some PC just need a restart here).

 

[orchiley]

Using a USB and downloading the Media installation tool seems to have worked after reinstalling windows. Thank you for a very detailed solution