intel system hang

I upgrade my computer from intel
my new configuration is:-
Intel Original G33 motherboard
Intel C2D 2.4 GHz processor
667 MHz 1x1 RAM DDR-2
160 GB seagate HDD
Intex SMPS
Samsung CRT 15" Monitor (Old one)
I installed windows XP SP-2 and XP install successfully
and it works very nicely but after 10-12 min it get hang and then nothing happen
neither keyboard works nor mouse at the last i have to restart
computer there is no any other option left accept restart, i
thought this is the problem of my OS but i changed OS and install
vista but still problem is same as XP
I went to vendor and ask him, he changed my mother and replaced with new one but still problem is same
before i was took Intel 945 Mother after repeating the problem i changed and took Intel G33 Mother Board. when i
changed it to G33 Mother Board it run and it works properly after 10 days again the problem is same
my system is again hang. i do not understand what is the problem? my mother board has changed more then 3 times but
my problem is not solved I used another RAM and i checked my RAM to other computer it work i dont think it is the problem of my RAM, processor is left, But if any problem in processer then why it is working 10-12 min it should give FATAL error while installing OS or booting the system but OS is install and every application is working till 10-12 min.
I used Thermal paste for reduce heating i but still problem is same.
Please suggest me where is the problem what should I do?
if anyone having e-Mail ID of intel customer care or intel complaint
please give me .... i am very much fad up with my system.

Thanks a lot for ur time

Intel processors and work-stations have been used in high caliber business situations exclusively. AMD has never come close to handling the workload Intel does. I'll agree, AMD is making better chips now but Intel has the background to stand up to any situation.

In the case of this PC, I would be looking at the power supply as a possible suspect. It could, after a specific amount of time, get so hot that it cuts power to certain channels and hangs the system. It does not sound like a typical software issue nor does it sound like a processor or board fault.