Re: XPS 730x H2C loses power / resets / reboots "randomly"...
Try running prime95 if you get a chance. I would still like to see what temps are and if its stable under full load.This could narrow it down a little more.
Also you could try disableing stuff running in the background in taskmanager.
Antec 900 case, Intel Core i7 965, Antec Signature 650 power supply, G.SKILL 6GB DDR3 DDR3 1600,Hauppauge WinTV-HVR 1800 MCE Kit (tv tuner),SAMSUNG SH-S202N,Vista Ultimate 64-bit,GIGABYTE GA-EX58-UD5 X58 Motherboard, 2 WD6401AALS 640GB (raid), 8600gt gpu
System 2 Dell 8400 3.4ghz cpu, 4gb ram.