I just build a PC, with an Asus P7H55-M PRO
I have 4 GB memory 2 in A1, 2 in B1
My video card: nVIDIA Gforce 8500 GT
Everything looks great, but, after being working for a wile the system restart by itself.
I have been looking carefully to the temperature of the processor but seems fine.
Hello and welcome to the forums
As Proximon said post your full specs.
Also have you overclocked your CPU ? if so then return to stock speeds and see if the problem occurs again or not.
Also test your RAM with memtest and see if it reports any errors or not
The ASUS P7H55-M Pro is a mATX mainboard. It supports the future 32nm LGA1156 Socket processor. It also supports the Intel Turbo Boost Technology. It has 4 DIMM slots expandable to 16GB. It supports memory of DDR3-1066/1333 and DDR3-2133 (via Overclock). The board has a fanless design, thus it is quiet. It also support ASUS EPU and 4+2 phase power design for power savings.