Q: i think i spilled some juice on my laptop where the built in mouse is and now when i try to use it the arrow just keeps going up and down wuts wrong with it plz help
A: You have spilled a liquid onto your computer and that is the answer of your question... The juice might have short the electronic beneath the build in mouse (or trackpad) and causing this erratic problem... You might want to send it for repair, with your finger crossed, hoping that they will not find it out (if you send it as an under-warranty repair)...