A File I/o Error Occurred While Accessing Vmware Converter and other critical errors can occur when your Windows operating system becomes corrupted. Opening programs will be slower and response times will lag. When you have multiple applications running, you may experience crashes and freezes. There can be numerous causes of this error including excessive startup entries, registry errors, hardware/RAM decline, fragmented files, unnecessary or redundant program installations and so on.You can repair your os by this tool. http://microsoftsupporthelp.org/a-file-io-error-occurred-while-accessing-vmware-converter/
Here are some nice blogs for troubleshooting as well. . VMWare Convertor – A file I/O error occurred while accessing | The Telarah Technology Times