I'm running Vista SP2 on a HP laptop with an Intel I3 processor. I recently installed some Brother printer software and had to restart to finish. After I logged back in, I got a message for every startup program saying the publisher could not be verified and did I really want to run the program. This is happening for everything I try to run, including windows system files such as the control panel and its subelements. The same problem occurs when opening a text or script file for editing. I also cannot access "Help & Support", it just says files not found.
I've run a Norton's scan on the drive and then MalwareBytes Antimalware (free version). MalwareBytes found 12 PUPs and 1 malware file. I removed all of those, the PUPs were all related to Conduit which I had briefly install last year and uninstalled almost immediately.
One of my administrator account's desktop icons open as small icons stacked on the upper left side of the screen and cannot be moved or size changed. In fact, I can't find the display Icon on the control panel. It still is supposed to be there, is it not?