Sony Vaio Laptop will not run windows Defrag

she had a Million things that automatically started when she booted her laptop. I ran msconfig and solved that Problem. The Computer is very Slow. She has asked me when I get a Chance to install Linux. In the Meantime I will see what else I can do to solve the Problem. I will DL Anti Malwarebytes to see what it can find. Defrag however, should still run.