I've been having this error regularly lately. I've tried to run chkdsks and such on my drives, and very minimal information there. I have several external drives, and 2 internal drives. I have tried not having one or two drives on when I boot and still get the error. Have formatted the system drive, reinstalled everything and still get the error in a short time. 1)If its caused by a drive, is there a simple way to determine which drive. 2)If not, can anybody determine anything by the minidumps? When it gives me the blue screen, it doesn't show a file as being the source, so I have little direction on which way to turn. Thanks and hope someone can help. Additional information. This is what it shows in the system log Error code 1000000a, parameter1 0000000c, parameter2 0000001c, parameter3 00000000, parameter4 804fc36d.