I have an HP DV4 Laptop(i5, 8GB RAM, 256GB SSD) that came with Windows 7, I recently updated to Win10. Everything seems fine except of the high CPU usage in System and Compressed memory.
I narrowed it down to the Realtek Memory Card reader. I should also mention that right after the Win10 update two Realtek Memory Card Reader entries were in Device Manager with yellow exclamation icons.
I deleted them and had Windows install the drivers from Windows updates, after that everything LOOKS fine. And there's only one entry now.
After a while I noticed the fan making a lot of noise, wasn't like that in Win7.
Anyway, after hours of troubleshooting I eventually came back to the Realtek reader, sure enough after disabling it CPU went to normal.
I have also downloaded the newest driver from realtek site. Same problem.
Memory usage is normal too, it's only the CPU that spikes.
Any ideas? Thank you.
Edited by s3nr1, 04 April 2016 - 01:07 PM.