Reason (one of..): Host OS might have shutdown unexpectedly causing a running Virtual Machine to die without saving its state.
- Stop VMware player
- Go to the virtual machines directory, i.e. where VM files are stored on host OS.
- Check for lock (.lck) files. Usually in Windows: vmdk.lck, vmem.lck, vmx.lck
- Move .lck files to another directory( for backup purposes)
- Restart VM
- If its fixed, delete .lck files