Error msg

You would need to be more specific I think. You can try running the disk check from your system tools and see if there are bad sectors or some other issue with hard drive. I would also run the defragmenter and the disk cleanup. Than run the virus scanner and/or any malware scanner you have installed and see if you have anything on the computer.

Is the Dell Dock a software pre-loaded on your PC that adds some custom dashboard to Windows? If that's the case, uninstall it from Add/Remove programs. Those things are useless for the most part.