Right-click on the spoolsv.exe process, select Properties, and go to the Threads tab. Select the thread (s) consuming all the CPU (via the CPU column), then click the Stack button and copy the stack ...

I have a problem with a machine that periodically has spoolsv.exe peg the cpu usage up at 99%, which obviously slows the machine to a crawl. If I restart the computer, it works fine for a while, but ...

This is an undesirable program. This file has been identified as a program that is undesirable to have running on your computer. This consists of programs that are misleading, harmful, or undesirable.