Hi Denno.. I wish your malware thread would've been a little bit more fruitful. It does seem you have quite a mess. I'm still not convinced that your problem is a result of installing Carbonite, nor am I convinced that this is really that significant of an issue. I feel that we are missing something here that is causing a cascading failure here.
However, at this point, because you are willing, I guess it is time to back up your data and reinstall Windows.
I agree with Ztruker on his recommendations, and his cautiousness.
I would suggest that you also verify that there is no hard drive trouble, and that there are no RAM troubles. In order to test your memory, you can download the Windows Memory Diagnostic and burn the resulting .ISO image to a CD-Rom on a working computer. (Do you have another computer to work on?) You will have to use a third party burning program that is capable of burning CD-Rom images from .ISO files.
DeepBurner FREE is one of those programs. You could do all of this most likely on your computer, its just difficult to work around your issues. But, I think you have a pretty good idea of how to get things done in your present state.
In order to test the hard drive for physical damage, please use task manager to open up a command prompt window (Run the new task '
cmd'). At the command prompt, type
chkdsk /r and press ENTER. When prompted to schedule a scan for the next reboot, answer
Yes. Reboot the computer and be patient while chkdsk checks your file system and hard drive for trouble. Pay attention for message concerning "replacing bad clusters." These are a sign of hard drive failure.
In my opinion it is best to run these two diagnostic tests before wasting any more time trying to reinstall your operating system.
Have you performed a reinstall before? There are some things to consider before attempting to do what you are doing. Licensing issues may arise. First of all, are you going to use an original OEM/Retail Windows XP disc, or are you going to use a manufacturer provided recovery disc? Or, do you only have a recovery partition on your current hard drive? Do you have the original product key used to install WIndows XP on your computer? Does the disc that you have match the same version of key that you have? Are you confident to be able to re-load necessary hardware drivers and updates once the reinstall is complete? If you use another hard drive, you may be required to reactivate your windows XP with Microsoft over the phone.
Because I feel that your problems are all a result of some root cause, a repair install, as suggested by ztruker may solve all your problems. However, if you can back up your necessary important data such as documents, pictures, music, etc., in my opinion, a fresh install is always the way to go. You will be starting over from scratch, but you will ensure you are not going to deal with any residual problems.
I would've loved to try and diagnose this problem more, but sometimes it is better off in the end to just reformat and reinstall. Who knows, there could be more problems ahead that we don't even know about yet. I do highly recommend that you verify that there aren't hardware issues such as I suggested above BEFORE attempting any reinstalls. Maybe you did already, I don't remember. This thread is getting long.
Please post back here with your questions and results and update us on your progress.