My Dad has a Lenovo running Windows 10. It's about 5 years old. It has a 1TB hard drive, but only about 150gb on it.
I think the chip is an i5 with 3.4 ghz and 6 gb RAM.
It's running incredibly slow. I've run and AVG virus check and it's clean. I did the disc utilities. No help. It's fully updated.
Other than installing more RAM, is there anything else I should check? Should I try a separate anti-malware program?