
My computer has been crawling for the last two weeks. I have run every possible scan recommended here and on geekstogo.com for over a week, and nothing was found.
When I went to the windows task manager to end something, I looked at processes and saw spoolsv.exe using 99% of CPU. I ended that process and everything immediately was back to normal. Later, things were at a crawl again and I saw that spoolsv.exe was back and using 99% CPU again.
I did a search for spoolsv.exe on google and immediate found a tip to check the printer queue for jobs. Sure enough, there was a print job waiting there for my photo printer (which I don't have turned on).
I canceled the print job and everything is back to normal, and spoolsv.exe is there using 00% CPU.