Alright, I'll explain what's been happening. My friend is always going on about how his windows explorer is always freezing up, and he keeps having to restart his computer. He gave my a .mp3 song to listen to recently, but it never played, and it refreshed (perhaps rebooted) my explorer.exe. Just late this evening, my computer froze with 100% CPU usage. I tried closing some of the processes, but the CPU Usage remained at 100%. I then killed explorer.exe, and re-ran it through File -> New Task, but was still sitting frozen at 100%. My virus scanner is completely up-to-date, and it didn't detect anything upon execution. I'm going to do a spyware/malware check now, but I was wondering if anyone knew what was happening, and how to fix it.
After a reboot, all is well. But I don't know if it was a random CPU freeze I had, or something worse. Could this please be clarified?
Thanks for reading, and for any assistance!