Extremely Weird Behaviour from First PC Build

Mockingbirch

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Sep 8, 2014
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Hey everyone,

So, last night I finished assembling my first PC with no prior experience (parts link below). Everything was running great, I got into BIOS, got Windows installed, got some drivers working, no hiccups whatsoever. Then I restarted for a driver... oh boy. The PC booted up great: all lights and fans working, keyboard receiving power, optical drive spinning discs, etc. The thing was, absolutely no signal was being sent to the monitor, either through a VGA connection from onboard graphics or through a DVI connected to my dedicated GPU. The monitor and all cables are fine, I've tested everything. I tried for an hour and a half to get the screen to display an image, but kept getting "no input." Frustrated, I turned the PC off and went to bed.

This morning, I pressed Power and it worked flawlessly again. I passed it off as a one-time quirk, and then later I realized that I'd forgotten to add a PCE WiFi adapter. I turned off the PC (including power supply), opened it up, keeping myself grounded against the case the whole time, and installed the part. Then I booted the PC back up... same problem. Everything is powered, but I'm not getting any signal on the screen. I let it sit around for an hour or so, but it didn't help, and I'm getting really frustrated. It's not the graphics card, because I can't get the onboard card to emit anything either, and I'm fairly sure that fried motherboards don't spring back to life overnight. Can anyone tell me what might be going on? Because I'm completely stumped, and ready to start pulling hair out.

PC (keyboard is actually SteelSeries, all other components accurate):

http://ca.pcpartpicker.com/p/zk9pD3

 

m3ch

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Jun 9, 2006
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Check Pci-e power connector to graphics card if applicable. Sounds like a voltage issue. You may have to clear CMOS to get into BIOS, then restore defaults- your motherboard manual should tell you where there is a jumper or button to do this. Check the memory is set to correct frequency and voltage. Let us know how you go on.
 

justaguywithagun

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Dec 14, 2009
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holy sh..

ok, ok, why would you buy top-notch components like you have..and then that psu?

throw that piece of crap away, or return it if it isnt too late. i wouldnt run less than a 550w quality unit on that rig, and the corsair cx500 certainly does not qualify.

alright, maybe it isnt -that- bad, but it certainly is not a very good unit and really i personally would shoot for a quality 620-650w unit. i like to account for capacitor aging and allow for any upgrades.


all that aside, try resetting your BIOS. unplug psu, short cmos jumper/pull cmos battery then replace everything appropriately. if that works, go into the bios immediately and check CPU temps. also double check memory spd/timings as well as voltage. the correct mem voltage for that crucial ram is 1.35v. perhaps bump it up to 1.38v.

i'll keep this page open in a tab for a while so i wont forget about you
 

justaguywithagun

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Dec 14, 2009
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http://www.tomshardware.com/faq/id-2185279/power-supply-tier-list.html the CX series is tier3, not very good.

neweggs psu calculator, while dated, states a system like this consuming just over 500w
coolermasters calc says 414w
asus' calc says 600w
http://powersupplycalculator.net/ says 400w with a i7 4790 non-k

so depending on who you believe, youre either way over on peak watt usage or are rather close to the edge...especially for a lower tiered psu with cheezy capacitors.

and my question still remains: why cheap out on the PSU when you could have shavedf a little here and there to get a quality unit?
 

Mockingbirch

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Sep 8, 2014
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Hey everyone, thanks for the replies. I actually fixed it with a technique I never thought in a million years was going to work: I pulled out the graphics card and blew in the slots like with my old Gameboy :p Worked like a charm immediately. All those hours sunk into troubleshooting...

As for the power supply: I have had literally zero experience with computers before. I didn't even know what a motherboard was before I started doing research to build this computer. But I went off of a budget gaming PC template, and then upgraded the RAM and CPU for music production. This was the unit recommended on the template, and I checked with several PC enthusiasts before I ordered the components and they all signed off on it. What would be the potential issues with going over wattage? And is that even likely? The estimated wattage on PCPartPicker is 360...
 

Mockingbirch

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Sep 8, 2014
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Sigh...well, wishful thinking. Same thing happened again. This time I fixed it by unscrewing the support and letting it hang from the motherboard slot. Then the next time the computer went to sleep it happened again. AS of now, I haven't gotten it to work. Does this imply a dead GPU?