Hi there,
I'll post a troubleshooting document for you below - just check if there are any more areas you can clean. After that, please go on to the reset steps and Bios updates.http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&dlc=en&docname=c03620929
Also, you can run the HP support assistant to check if all the updates were completed. There are also diagnostics available there as well: http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&dlc=en&docname=c03467905
Please let me know how it goes :)