Guy wrote:


"Ghostrider" wrote in message
m...

On 12/27/2013 7:29 AM, guy wrote:


"Ghostrider" wrote in message
m...

On 12/26/2013 3:21 PM, guy wrote:
Just recently my computer started to shutdown randomly. Sometimes after
several hours and sometimes after a couple of minutes.
After several weeks of this I didn't use it for a week or two. After
turning on again, the monitor said no video. Today I replaced the
video card and same message. Replaced the monitor and got video back.
Booted up and everything came up for about 5-10 min.
and then shut down again. The unit is 16 months old, with an Intel i7
-960 and 3 sticks of 2G dominator memory. I don't know what to
do next..
Appreciate any help to resolve this issue.

Guy

And what was the CPU temperature? Perhaps it is time to do a little
housekeeping, such as cleaning out the fans and fan filters, the dust
and lint that might have gathered inside the case, renew the thermal
compound between the heatsink and the CPU. At the same time, refresh
the contacts of the peripheral cards and memory. Remember, the i7-960
is a "hot" CPU, even when not driven too hard.

GR

Ghostrider,

I keep the computer pretty clean, and that was the first thing I had
looked at.
There was not any buildup, so I was trying to figure what hardware might
be over heating.
I had cleaned and reset the CPU / heatsink which is a Corsair H70 liquid
cooler with 2 fans.
Nothing seems overly hot, and the last temperature monitoring I had done
was well within range.
Exact temps escape me now!
I am thinking it is the CPU or mother board. I had it boot to safe mode
with networking and it ran for about 1-2
hours before I shut it down yesterday. Didn't know where to look to
pinpoint any specific codes or messages.
Just ran it in safe mode again and it shut down in 5 minutes...

Thanks for your help, I will probably reset the CPU again and see what
happens.
Guy

Guy, I presume that you are not over-clocking. But even if you were,
a 550-Watt PSU is inadequate for this ASUS motherboard and CPU. As a
custom builder, I usually use a minimum of a 750-Watt PSU for an X58
motherboard with the Intel I7-950+ family of CPU's. Paul might have
the right idea of issues with the [old] PSU.

GR

I replaced the power supply with a new 750W, one and everything is
working great!
I ran prime 95 for almost 2 hours and monitored the temps which never
exceeded 70C.
Looks like the old PSU was starting/did fail and the info from you and
Paul helped
me to get everything resolved. Many thanks to both of you, and I hope
you have a
Happy New Year!!

Guy

Good diagnostic work. The poster does all the work, all
we do is throw out the suggestions :-)

Paul