Hi, i really dont know what to do here, i'm using a new system, everything is about 2 months old and the case is well ventelated etc.. Came home from work today, started reading emails and firefox stops responding and the window goes pale (i'm using vista) i wait to see if it recovers and i get a strange error in explorer.exe, not seen it before and this takes my taskbar away but firefox stays, I think i'll carry on using firefox and i'll restart in a minute. Next thing i know i have a blue screen and the machine reboots, i get a "read error from disk. press ctrl+alt+del to restart" which repeats each time i try it, so i boot from Vista DVD, try to repair the boot loader but it only recognizes an old XP installation off my second SATA disk. Next i go into command prompt, type c: and the c:\ drive it shows me is in reality my d: drive, i type d: and it says the file system is corrupt. Typed chkdsk d: and it gives me a similar error. Unplugged my second sata drive altogether attempt to install vista and it shows i have a 298Gb drive with 298Gb free space, no file system detected or anything. :doh: What's the best thing i do from here? there was a lot of stuff on there but it's all stuff i can get again, it will take a while but it's not the end of the world, is there any way to find out if that was a hardware faliure or a software one?