Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I have an Acer Aspire 4935G. After a Windows Update, I was prompted to restart. But when it was booting up again, it went into its Startup Recovery mode, and the error says that a boot critical file, ntkrnlpa.exe, was corrupted.

I don't have a Vista CD to do a Repair. I still have the Recovery partition (I also have Recovery Discs) but I've read that using either will do a clean install. I save most of my data in a separate partition: I moved my Documents and other locations to the default D: partition, but I forgot to move my AppData, which includes a backup of cellphone contacts and messages that I still want to recover.

Is there any way I can repair my Vista installation without data loss?

share|improve this question
add comment

2 Answers

up vote 0 down vote accepted

See this article for downloading a Vista Recovery disk : "How to Make a Windows Vista Repair Disk If You Don’t Have One".

You can then use your most recent Restore point to rollback your computer to a time that it still booted ok. See the following article for instructions: "Using Windows 7 or Vista System Restore" (and where I found the reference to the first article).

You may use first Molly's suggestion to save your data, of course, since these kind of operations are dangerous.

share|improve this answer
add comment

you can use a Linux Live CD (e.g. Knoppix) or create your own BartPE Windows 'Live' CD and backup your files to any USB storage device or burn to CD/DVD.

and then restore your laptop with the recovery utility.

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.