New build, not working?!

[stormtrix]

Hey there, I just picked up parts for my new build, put it together, and am having problems. With my first PSU that was in it, the computer would boot, and all the fans would boot, but I would receive no Video or USB power. When I put in a bigger watt PSU, the lights on the Mobo light up, and the fans on the heatsink start to turn, then it shuts off. It turns itself back on, and repeat.

The specs are
Z97x Gaming 7 Mobo
Nvidia GTX 750ti
400w then 500w PSU
6gb's of RAM
Intel i5 quad core processor.

If you need any more info, just ask.

 

[Nerdboy]

Does it post or give any beep codes?

 

[Gagan sarpanch]

Your processor is properly fit on the motherboard.. you need to plug out the fan .. and paste heat sink material... i think its the problem

 

[Gagan sarpanch]

Your processor is properly fit on the motherboard.. you need to plug out the cpu fan .. and paste heat sink material on the processor ( thermal compound ) ... your processor is overheat.. i think its the problem

 

[stormtrix]

I'm getting no beep codes, I've tried taking out the sticks of RAM. I also forgot to mention that I am using a Harddrive from my old build, if that makes a difference. The processor is properly in there, and the fan is running fine.

 

[Nerdboy]

Do as gagan said and take the cpu fan & heatsink off and re-apply the thermal paste as your cpu may be over heating thus making it shutdown on you.

 

[stormtrix]

My processor didn't come with said thermal paste.

 

[Nerdboy]

This is a major issue as the thermal paste is what does over 99% of the heat transfer from the cpu to the heatsink. Normal paste is avg 2usd but expensive paste can be any where from 5-20 usd. And honestly the expensive paste does a 1cel diff in temps (this is compared to other thermal pastes). But with no thermal paste at all the cpu will just over heat and shut down as a safety feature.

 

[Gagan sarpanch]

You should buy a thermal compound from anywhere for your solution

 

[Nerdboy]

I second that gargan. Without thermal paste your cpu will be to hot and shut down! Thermal paste now days is a must to help cool your CPU.

 

[stormtrix]

I just put the 400w PSU in it, and it stays turned on, which leads me to think it's not the processor, but I'll pick up a tube of paste and see if that makes the difference.

 

[Nerdboy]

Just turning on isn't just it dude. When you play games u use more of ur cpu, when you do that it generates heat (basically like a human running, when he runs he sweats but instead of ur pc sweating it loses it's heat through the heatsink) the cpu will definitely shut down later on in the line due to a heat issue if ur not using thermal paste.

 

[stormtrix]

Hmm, okay then. I'll buy the paste, but it just seems strange that switching the PSU's make it behave completely different.

 

[stormtrix]

My cousin actually had some laying around. Applied it, same situation.

 

[Nerdboy]

Do you still have the psu switched? Maybe one has also been failing or non functional?

 

[Gagan sarpanch]

Dude please check your cpu temprature

 

[stormtrix]

I have the 400w in, which is what I used in my old build, and worked up to the second we switched it. The 500w is brand new.

 

[Nerdboy]

How can he check it without bieng able to even post or boot to the bios on the pc??? Only way I can think is an external thermometer and it would have issues trying to get accurate temp with it shutting down ...

 

[Gagan sarpanch]

Dude op pc work for 2-3 mins. Than he go in bios and check cpu health status

 

[stormtrix]

The PC Doesn't stay on for more than 2-3 seconds.

 

[Gagan sarpanch]

Oh its very serius.. one and only soluation is thermal compound

 

[adamb1897]

What is the current brand of the psu? (some are really bad.) Also try to figure out how much total wattage all the parts need and make sure you have enough.

 

[stormtrix]

Uhh, the 400 is a coolmax, and the 500 is an Antec

 

[Gagan sarpanch]

Dude Problem of compound not psu

 

[stormtrix]

hmm