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Power Supply Problem

D

Doreon

n00b
Joined
Aug 14, 2009
Messages
17
Hey guys

I'm having a problem with my new build and I think its my PS. I've had it for about 2 months and everything has been running fine. I turned it on this morning and got an errior screen (didnt have time to read it) then it restarted and ran fine for a couple of hours at which point it froze up. I had to manually shut it down via the power button. Now when I try to boot it up the fans turn on but never get to full speed and the monitor doesn't ever pig up a signal. I tired an old PS unit I had and it boots up to the motherboard screen and gets stuck (the old PS that I have doesnt have a connector for my video card)

It seems pretty obvious to me that its a problem with the PS but I want some more opinions before I take the time to ship this back to newegg.

Its a hx700 Corsair - if that helps. Thanks a bunch
 
Are you certain the old power supply is good? If it is, it doesn't explain why your system gets stuck at the motherboard screen. Even though you don't have a power connector for your video card, it should still be able to run, the card will just be severely downclocked.

I believe the problem lies in your motherboard, but I can't be sure. I had a problem once where my computer will just continuously turn on and off, and nothing will ever be displayed on the screen. It turns out that I had to remove my processor and put it back in for it to work.
 
Sounds more like a mobo issue to me as well. Even if you were able to get some result with your other PSU, the symptoms you're having are more consistent with a failing or failed motherboard.

Try disconnecting the PSU completely and just hook the fans up to it. Take a metal paperclip or a piece of wire and connect the green wire from the 24-pin ATX connector to a black wire on the connector. Then switch the PSU on. If the fans spin normally, then the PSU might be working fine.
 
so I tried removing the processor with no luck. Its still doing the same thing - fans are coming on but not at full speed and no video detected.

I tried the paperclip method that Zero suggested. The fan seems to be spinning normally. The fan has 3 speeds and all 3 speeds worked as well as switching on/off the led.

Clear cut mobo issue?
 
Almost definitely the motherboard. You might consider the RAM as well, although I'm not sure RAM would cause your motherboard to not post. Check all connections to make sure they are tight, although I'm sure you've done that already.

If the fans are spinning normally, your power supply seems to be fine. Test it in other computers if you have any, or in a relative's or friend's computer if they're willing. If those computers power on fine, then there is definitely something wrong with your computer, most likely the motherboard.
 
Hey guys. I got my new motherboard in today. I plugged everything up and turned it on. The fans are spinning at normal speed now and the green light on my monitor now turns green instead of flashing red like before. However no image displays. Its just a solid black screen. The bios or start screen doesnt even come up.

Any advice?
 
Yet again I am having another problem. Now the computer is randomly restarting. So far I haven't been able to trace it to anything in particular that I'm doing - it seems random.

Everything I read on google links it to heat problems but I monitor my temperatures closely and they never get high.

This started after I replaced the fried motherboard that I had. Could it be something that I did when putting it back together?

All help is appreciated.
 
Doreon said:
Yet again I am having another problem. Now the computer is randomly restarting. So far I haven't been able to trace it to anything in particular that I'm doing - it seems random.

Everything I read on google links it to heat problems but I monitor my temperatures closely and they never get high.

This started after I replaced the fried motherboard that I had. Could it be something that I did when putting it back together?

All help is appreciated.
Click to expand...
What program are you using to monitor your temps?

If this is not a fresh install of Windows, there's a possibility that the old mobo may have corrupted some parts of the Windows install.

Try out these tests though:
[Testing the RAM]
Download Memtest86+ v4.00 or whatever the latest version is, unzip it, burn the ISO file to a CD, and then boot from it, just like you would do with the XP/Vista install CD. Let Memtest+ run for at least three hours on each stick of RAM separately as well as test the RAM all together. Go for a full 24 hours if you want to be completely sure that the RAM is not a problem. If you start seeing errors, than your RAM is defective or you have incorrect settings for the RAM.

[Testing the Hard Drive]
Download the CD image of Hitachi Drive Fitness Test, burn the ISO file to a CD, and then boot from it, just like you would do with the XP/Vista install CD. Test the hard drive and see if any problems are found. DFT will run on most manufacturers' hard drives. Alternatively, you can use Seagate's SeaTools for DOS to test a Seagate or Maxtor drive. For a Western Digital drive, you could use Data Lifeguard Tools for DOS to test a Western Digital drive.

[Testing the CPU]
Use Prime 95, OCCT, Orthos or Intel Burn Tool to stress test the CPU.

[Testing the GPU]
Use Furmark or ATI Tool to stress test the GPU. If you see any artifacts, the GPU could be overheating, too overclocked, or faulty.

[Testing the PSU]
Buy and use a digital multi-meter to monitor the voltages coming from the PSU. Follow the instructions for "Using a multi-meter to check voltages":
http://www.bfgpower.com/troubleshooting.html#DMM
 
New Egg has offered me a refund for the majority of the items. I had nothing but problems with this build so I'm going to cut my losses and return the items I can. Thanks for all your help. It was much appreciated.
 
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