Repeating Error: "Bad Image.... Loaded.dll file contains an error"

For about a week now, I haven't been able to open/run any programs on my Windows 7 laptop. Here is the timeline to the best of my memory:

- 6/11 (about): downloaded driver to fix scroll/touchpad that wasn't scrolling
- 6/20 (about): successfully replaced cpu fan
- "Bad Image - ...Loader.dll file missing" began appearing over and over
- All files/programs/shortcuts don't open. Just get same dll error
- 6/28: noticed "Windows 7 Build 7600, This copy of Windows is not genuine"
- Found 6-8 highly suspicious programs in Uninstall Programs (crossbrowser, cinestudio, speedsearch are the only ones I remember). We're most likely downloaded with touchpad driver. When I noticed the programs, I clicked Uninstall on all, but they were not uninstalled, but only removed from the list in Uninstall Programs.

I would greatly appreciate any help.

(Also, I tried sfc /scannow. That found and fixed two problems. But the problem persists. I then tried a system restore. Only one previous restore date was shown as an option. When I tried to restore it, it was unsuccessful)