you may be able to find out more by disabling the "Automatically restart on system failure" option. This will allow any blue screen, (BSOD or Blue Screen of Death), to display which will have more information,. like the STOP error code and/or the application that caused the error.
To disable the "Automatically restart" right click the My Computer icon, select Properties and then the advanced tab. Then click the Settings button under Startup and Recovery, and in the new dialog remove the tick for "Automatically restart", then OK/Apply/OK out.
The next time your system halts, it should display that BSOD which may help.
I have been living with this problem ever since I built my computer and have finally decided to tackle it.
Whenever I transfer a large amount of data (>1GB), my computer restarts itself in the middle of the process. There isn't a definite amount - sometimes it will complete 2-3GB before it happens, sometimes it will happen after 250MB. I also noticed that it sometimes occur when I am continuously sending data, such as when I watch a video file on an external drive.
Each time it happens, I get a message upon Windows loading that says that the system recovered from a serious error. I look at the logs, but I can't make any sense of it.
This happens even when I am using a self-powered USB source, so I don't think it's a power supply issue. I have several ports, but changing the port doesn't make a difference. Any ideas would be really appreciated. Thanks
Here are my specs:
Windows XP Pro SP2
AMD Athlon X2 3500+
ECS KN1 Lite Motherboard
Antec NeoHE 430W PSU
2GB DDR PC3200
1 320GB SATAII HD
1 160GB IDE HD
Creative SoundBlaster Audigy2 ZS
ATI Radeon X1900
IR receiver for wireless keyboard
Separate IR receiver/charger for wireless mouse
Self-powered USB hub
Self-powered External HD (have 2, but not used at same time, both fail)