Critical Boot Error Windows 7
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads repair windows 7 boot from linux with us Super User Questions Tags Users Badges Unanswered Ask Question _ Super User is a question repair windows 7 boot after clone and answer site for computer enthusiasts and power users. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask repair windows 7 boot sector without cd a question Anybody can answer The best answers are voted up and rise to the top Which file is the boot critical file that is corrupt/damaged? up vote -1 down vote favorite Trying to figure out which file needs to be repaired. http://answers.microsoft.com/en-us/windows/forum/windows_10-hardware/root-cause-found-boot-critical-file/7ef2117c-5ca8-40e5-bd6a-d23b2eb9b07f Running windows x64 home premium I don't have a optical drive on the laptop, but have sub drives.windo The startup repair log says: Bugcheck c000021a Parameters = oxfffff8a00009a1co ... Boot critical file is corrupt. Repair action: File repair Result: failed. Error code = 0x2 Sometimes when I start the laptop and try startup repair, I just get a blue screen of death: bsod windows-7 boot filesystem-corruption share|improve this question edited May 16 '15 at 14:39 asked May 16 '15 at 14:22 Sun 3,42721332 http://superuser.com/questions/915577/which-file-is-the-boot-critical-file-that-is-corrupt-damaged Why the downvote? It seems replacing win32k.sys from c:\windows\winsxs to c:\windows\system32 worked. I first renamed the win32k.sys in he system32 folder as win32k.sys.corrupt –Sun May 16 '15 at 14:42 Because your asking which system file out of hundreds of system files is corrupt without providing the information required to determine which file it was. You then act like we should have known it was that file. –Ramhound May 16 '15 at 16:32 How do I know it is one file or one out of a hundred? I thought the error message might be very specific. –Sun May 16 '15 at 16:43 1 @sunk8181 - Well you fixed a single file and fixed it. It also could have been multiple systems files. This type of problem is caused by a HDD that has failed. –Ramhound May 16 '15 at 16:59 My HDD is a SSD and I was able to use the laptop the entire weekend. I think your statement is true in some instances, but I'm not sure it applies to my situation. –Sun May 18 '15 at 15:33 | show 3 more comments 1 Answer 1 active oldest votes up vote 0 down vote STOP: 0xC000021A Cause This error occurs when a user-mode subsystem, such as WinLogon or the Client Server Run-Time Subsystem (CSRSS), has been fatally compromised and security can no longer be guaranteed. In response, the operating system switches to kernel mode. Microsoft Windows cannot run without WinLogon or CSRSS.
List Welcome Guide More BleepingComputer.com → Microsoft Windows Support → Windows 7 Javascript Disabled Detected You currently have javascript disabled. Several functions may not work. Please re-enable javascript http://www.bleepingcomputer.com/forums/t/438268/unable-to-boot-into-windows-7-boot-critical-file-cwindowssystem32driversvmbussys-is-corrupt/ to access full functionality. Register a free account to unlock additional features http://www.w7forums.com/threads/computer-wont-restart-root-cause-found-boot-critical-file-d-ci-dll-is-corrupt.10903/ at BleepingComputer.com Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new windows 7 topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site. Click here to Register a free account now! or read our Welcome Guide to learn how to use this site. Unable to boot into Windows 7: windows 7 boot Boot critical file C:\Windows\system32\drivers\vmbus.sys is corrupt Started by trilbyfish , Jan 15 2012 02:43 PM Page 1 of 2 1 2 Next Please log in to reply 25 replies to this topic #1 trilbyfish trilbyfish Members 12 posts OFFLINE Local time:07:36 AM Posted 15 January 2012 - 02:43 PM When i boot up my computer it doesnt reach the user login screen before it loads of startup repair. It looks for a fix but it doesnt find one. In the diagnosis the only error it shows is 'Boot critical file C:\Windows\system32\drivers\vmbus.sys is corrupt'. I have booted kaspersky repair disk and run a full scan which found no viruses or malware etc. From the startup repair window i have tried a system restore which had the same problem when attempting to boot. I can only access the system recovery options screen. I am running windows 7 32bit, and i dont have a windows 7 disk but do have the windows 7 32bit iso file that i used to install windows 7. I would be grateful for any help to resolve this issue. Thanks in advance. Bac
2011. Page 1 of 2 1 2 Next > GW7777 Joined: Dec 28, 2010 Messages: 11 Likes Received: 0 I was using the computer when all of a sudden it shut down. When I turn it back it on, it automatically tries to do a Startup Repair. After several minutes, I get the message: "Startup Repair cannot this repair this computer automatically." When I click on "View problem details," everything looks fine except for "Root cause found: Boot critical file D:\CI.dll is corrupt." This happens every time I try to retart the computer. I've tried System Restore and System Image Recovery to no avail. Thanks in advance for your help. GW7777, Apr 20, 2011 #1 Advertisements Ian Administrator Joined: Oct 17, 2008 Messages: 3,426 Likes Received: 624 Can you try using the following tutorial to see if you can use SFC to replace the corrupt dll file? This tutorial should explain how it works: http://www.winhelponline.com/blog/run-sfc-offline-windows-7-vista/ Ian, Apr 22, 2011 #2 Advertisements GW7777 Joined: Dec 28, 2010 Messages: 11 Likes Received: 0 Ian, Turns out the computer had a rootkit virus, and Kaspersky TDSSKiller removed it. Thanks anyway. GW7777, Apr 22, 2011 #3 dizzle1119 Joined: Apr 23, 2011 Messages: 1 Likes Received: 0 I'm having the same problem, so could you please tell me how you fixed it? I'm begging you. I've done everything I know how to do. startup repair does nothing. system restore does nothing. Actually, system restore will run successfully, but it ultimately doesn't change a thing. I can't get past startup repair, so how on earth am I going to fix this? dizzle1119, Apr 23, 2011 #4 davehc VIP Member Joined: Jul 20, 2009 Messages: 1,958 Likes Received: 500 Location: Denmark As GW7777 found. Do a full scan with your anti virus program and accept any "fixes". P.S. Some free anti virus programs do not scan for root virus's davehc,