Got an entry-level laptop in a trade recently. The internal battery died and it had several issues, which prevented it from functioning right.
Probably one of the worst ASUS designs I've seen so far.
So, I've ordered a new battery, which in addition to turning the stationary black box back into laptop again also resolved some USB power/noise issues (disappearing flashdrives and twitchy touchpad).
Also, the internal cooling is awful even for a 6W SoC:
That metal pad is all she wrote.... There is a PWM fan inside the case, but it never spins because it's tied to system board temperature, but if you load the GPU or CPU - it won't budge even if the chip is 80C or hotter! Worst of all - there is no radiator or heatpipe of any sorts. Just a fan blowing air over a thin piece of steel, when it feels like it
So, I've figured out a quick 10-minute solution: I've added an extra heatsink from a donor motherboard, plus I've removed the PWM control and made it spin at constant half-speed by slightly tweaking fan's input voltage(which is more than enough for this small low-power chip).
Now it's nice, cool and still quiet. Ready to be deployed as a hi-tech internet-connected typewriter at my neighbor's office.