Hello, Today all of a sudden my screen turned black and my monitor went on standby after a startup. I just had put in an USBstick and I opened Firefox when this happened. I manually rebooted the system. A minidump was saved. In the logfiles I found this error: 0x100000d1 (0xf7e4d000 0x00000005 0x00000000 0xf7787cb1) On http://aumha.org/a/stop.htm this error is not mentioned. My machine: Windows XP Home SP3 (recently installed) Abit IP-95 Pentium 4 3,4Ghz 1 GB Ram DDR SATA HD Seagate Barracuda 80GB (a week ago checked with checkdisk: no problems found) ATI Radeon X1800XL Not a clue what this might be. Can somebody help? it is much appreciated. Thanks.