I'm having well-known difficulty finding my way around Windows 8 on a new laptop.
Somehow it has defaulted to the touchpad - which I never use - and the mouse now won't work. With great difficulty I try to get around the screen with the touchpad but can't find Devices which I assume is where I need to get so as to reverse the situation.
I'm glad it's not only me trying to get to grips with Windows8. Took me ages but all ok now. For your problem, click on the Windows image bottom left of screen & then click on the magnifying glass symbol at the top right hand side. Type in "devices" & it should come up with your mouse info. Click on that & follow it through. hope this helps
I was wondering if you'd switched from a mouse to the touchpad via a key combination that you'd accidentally pressed, rather than within Windows 8. I was hoping to examine the manual to see if such a key combination was mentioned.
Unfortunately, however, i3-5005U/8/1 is the processor within your laptop, not the actual model of your laptop, so I can't take a look. (HP makes several laptops using that processor).