Worrying Windows 7 issue happened to me that I can't explain. I switched the system on and got to the 'Windows Starting' screen as normal and expected to see the login-display moments later, only I didn't because Windows just hung for minutes on end. I checked the machine all over - the HDD LED was on, the front standby switch LED was showing as normal, but the OS just continued to hang. Tried switching the system off by pushing the standby switch in for x-number of seconds, but system wouldn't turn off. In the end I pushed the main switch to power it down. I then pushed the main switch to 'On' and rebooted via standby switch and this time Windows 7 presented me with two options: To load Windows in repair mode or in normal mode. I selected normal mode (thinking I'd try repair mode if it didn't work a second time...) and it booted as normal. I was able to login, etc. When I was presented with the two boot options, Windows was also suggesting that something to do with the hardware set-up had changed (presumably why it just hung the first time), yet nothing had been changed. So a bit odd.