Problem with PC

[Pietrass23]

Hi I'm new one.
Today I bought a MATRIX GTX580 P/2DIS/1536MD5
very nice and big g.card
but I have problem.
I have this motherboard http://pl.asus.com/Motherboards/AMD_AM3/M4A79XTD_EVO/
and power suply chieftec 750W it should be bigger ?? maybe 850W ??
and my comp. can't start :/
also I suspect that my motherboard crushed
Btw I got AMD PhenomII x6 1090T
hmmm when i pres power he seams starten and sudently reboting ther is no scrren on monitor he is black !!
Can some one help me with this ??
sry about my english

[Zka17]

Hey Pietrass, welcome to the ROG forum!

Indeed, the Matrix GTX580 is a very impressive card... and power hungry too...

Did you had an other graphic card in this built before the Matrix? Was the system working before?

My first idea is the PSU... Do you have the exact model of your PSU? Do you know the amperage on it's rail(s)? (I assume, you have connected all the power cables...)

Ps: You kinda missed the right section of this Forum, but I suppose one of our Moderators will move this thread in the right place - just mentioning it, to not get surprised...

[HiVizMan]

Indeed the thread has been moved.

[Pietrass23]

ugh i'm sory for wrong topic.
http://www.chieftec.eu/en/psus/a-80-.../ctg-750c.html
yes It was working with old one GeForce 250GTS
all power cables are pluged in
what power supli will hang with my spec.
Phenom II x6 1090T
ssd OCZ 120GB
16GB ram
and 1TB HDD
and ofc GTX580

[Zka17]

How old is your PSU? It's not too efficient from start, but if it's working properly, it should power your system with the Matrix too... - if it's old, it may loose some juice causing troubles... So a 750W should be enough for this system, just get a better one - like a Corsair or Seasonic one, with higher efficiency. (if you're planning further updates, more VGAs, then get a bigger one)

On the other hand, what monitor do you have? How you're connecting it to the graphic card? (through which cable)

[Pietrass23]

By HDMI and I try by D-Sub
my PSU is about 4-5y old
SAMSUNG S22A350H sory i forget to write model

[Zka17]

Then, yes, get a new PSU!

[HiVizMan]

I change my PSU's every two to three years, and yes I mean plural. Even the best PSU there is will degrade over time. That is the nature of electronics and just natural process of atrophy. The matrix is a lovely card and it is also a beast when it comes to power usage, all 480/580 cards are. So protect your investment and think about getting a new PSU. 750 for single card is fine in my estimation based on the hardware you have listed.

[Pietrass23]

ok new PSU is on way I bought Corsair 750W 60A THX 4 hellping.
I will write is it working or not

[Zka17]

OK, keep us updated!