Power button turning off but not on
My Lenovo thinkpad x230 power button has stopped working to turn my computer on after a shutdown. I can still force start it by attaching the AC when adjusted in BIOS but clearly not ideal when there isn’t a power source available. The power button does however work to shutdown or sleep the computer once on so I don’t understand the issue.
So far I’ve tried a few methods on the internet - taking the battery out, holding the power button for 30 seconds, putting the battery back in but nothing and given that the button still works to power off it isn’t a problem with the plastic button pressing down underneath. The battery is also pretty degraded, only holding 20% of its original capacity so I don’t know if that could be the cause.
I could buy another keyboard for £30 but I’m not even sure that’s the problem so don’t want to waste money if I might as well get a whole new laptop. I’ve also been trying to remap another key to the power button but hasn’t worked. Any help would be much appreciated, thanks