Hi,
My computer was fine just the other day, but i started it up today and now it wont boot up! I get an error message ‘Windows failed to start. A recent hardware or software change might be the cause.
File : CLASSPNP.SYS
Status : 0xc0000221
Info : windows failed to start because a required file is missing, or corrupt.

I put my vista setup disc in, i ran ALL the things it told me to (system restore, windows memory diagnostic, system repair, command prompt) but still they all fail.
I dont want to lose ANY files, because i have been doing lots of work lately on the pc and saved lots of important documents, is there a way i can reinstall vista without losing any of my important work?

Hi, I have Windows Vista Home Basic. Recently Ive had some problems with spyware. Deal Assitant, Virtumonde, Green AV to list a few. With some registry cleaners, multiple spy protection programs, avast/spybot/norton, I basically had everything cleaned up. Now though this is the problem:

On Start Up, Windows Explorer Freezes completely, restarts, then after that…Folders, User Data Folders, my computer folders,etc.. and also Internet Explorer Seems to be alright navgating. But something as simple as a notepad document will not open. Task Manager comesup with error message. Programs and actual files open, but only after minutes of lag time, and again just a few programs/files open may lead to freeze. Ive Checked Registries, Ran Anti-Spyware, and from what i can see everything is clean. I dont know why Im still having a problem. Please Help me with this. Thank You. Also, Note, under safe mode without networking, seems to run alot better. Any help with this will greatly be appreciated.

It says I have an error with rlacaepn.dll which I cannot find information on anywhere on the internet. (BTW, I am using XP.) What is this dll file and should I care about this error message?

I need some help. I am trying to synchronize my contacts with my husband but I need getting this f5319_advtweak.dll error message. I have tried uninstalling and reinstalling the program several times but nothing seems to help. I really do not want to type in the entire address book with over 100 names. Does anybody know what I can do?

I cannot start Windows on my PC! I get an error message reading:

"Windows cannot start because "C:\WINDOWS\System32\config." is corrupted or missing. Insert original Setup CD-Rom and press ‘r’ at setup to begin repair."

I have looked at the software that I recieved when I got my computer (it was given to me by my neighbor two years ago), and I cannot find the original Setup CD-ROM, and I can’t get the others to run at all. I have gone to dell’s support website on another computer and tried their suggestions, which did not work. I tried the command-line string, but I can’t input anything. I’ve tried looking on here for solutions, and attempted what I found, but nothing’s worked so far.

Please help, it was working perfectly fine on Thursday evening, but on Friday, this problem began. I do not know what is causing it. To be able to get the best help, here are the details of my operating system:

Manufacturer: Dell
Edition: Windows Media Center Edition
Software Package: Microsoft Office Windows XP 2000
Year Manufactured (guesstimate): 2001
Virus/Malware/Spyware Protection Software: Avast!, Super AntiSpyware, Spybot: Search & Destroy, Ad-Aware.

I need to resolve this quickly, please. Any suggestions you may have will be tried, and are *very* welcome! Thank you very much to anyone who can help me!