Hi, My Mum's iMac (one of the swivelling screen ones) has gone wrong (for want of a better word). I was just checking something on the internet and the spinning beach ball of death appeared. So I left for a bit and it came up with some error message and all the windows disappeared, the dock was still there but nothing would load and the task bar along the top had disappeared (the 'file' menu etc.). This has happened once or twice before so I thought nothing of it and swictched off and then back on again (which I have done before - no problems) But now it starts up to a grey screen with an strange icon of a folder - It has the Mac smiley face on it which flashes, alternating, with a ? mark. I have tried pressing the shamrock type key and holding down S at start up to try to get into the Unix disk checker utility but it doesn't work. It still goes to a grey screen and that icon. I have also held down shift during startup to no effect either! Has anyone experienced this before and is there anything that can be done? My mum hasn't backed up any of her files so a solution that preserves them is a must! Could it be a virus or something? Any ideas? Any help would be very, very, very much appreciated. Thanks very much in advanced.