My PC will not boot up (I have reverted to my old steam-driven machine for this!). Just before this problem arose the screen/cursor froze and I had to re-boot. It did this a couple of times shortly after re-booting before finally refusing to re-boot at all. When I switch it on, it goes through (or appears to) the usual routine before the first beep, then just continuously beeps every couple of seconds without anything further. The screen is blank. If it needs a pro to fix it, is there any easy way of retreiving data from the hard drive as I need it quite urgently (I didn't get the chance to back-up before the problems started)