Doesn't work unless in charger
My Lenovo Ideapad 330s, which is only around 2-3 years old won’t turn on unless it’s plugged in. The battery percentage is also stuck on 75% and won’t go up when it’s plugged in. This suddenly happened today after some testing with a virtual machine and enabling “Intel Virtualization Technology” in the BIOS. However, this might not be the reason to my laptop not working correctly. Should I open it up and check on the battery, or what troubleshooting should I try next?