Hi, I have an Inspiron 530 Vista HP OS and sometimes after it's been stood idle for an hour or so, it restarts itself and upon the restart a message pop-up appears saying ''windows has restarted from an unexpected error''. Is this something to do with the hardware or operating system? Thanks
This can be caused by numerous things, from temperature, to a badly behaving device driver.
Start troubleshooting the system by checking your idle and load temps.
Do you have any programs that run after a period of inactivity? Like a 3rd party screen saver?