So my friend and I are building a computer for him because his laptop broke. We did a bunch of research and finally got all the parts, which include a Gigabyte GTX 660 GPU 2GB and a Asus Z87-A motherboard. We test ran it outside the case to make sure it worked, worked fine. However, after we installed it all inside the case, it turned on like it usually does, all the fans worked, but it never beeps. When we take the GPU out, however, it does work. He has a 550W power supply. I tried to disable the integrated graphics card and it actually booted. After this, I restarted it after I installed all the drivers for it; but after it shut off it wouldn't boot anymore(no beep, but fans would still work). Please help.
Computer not booting with GPU installed.
- Thread starter Rezerex
- Start date
Solution
avjguy2362
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- Jun 21, 2012
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You may have inadvertently forgotten to hook up the 6 pin GPU power cord! Here is a basic check list. It is probably something simple if it had been working before!
http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems
http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems
Something extra as well that i saw.
On the Z87-A there are 3-4 red lights. These lights turn on and off when i press the power button in the front, always in the same order. the first light is the CPU_LED light. When i start up the computer without the graphics card installed, these lights go through their cycle and by the end there are no red lights on. However, when the gpu in installed and i start it up, only the CPU_LED light lights up, and it stays lit up until i shut the computer down.
On the Z87-A there are 3-4 red lights. These lights turn on and off when i press the power button in the front, always in the same order. the first light is the CPU_LED light. When i start up the computer without the graphics card installed, these lights go through their cycle and by the end there are no red lights on. However, when the gpu in installed and i start it up, only the CPU_LED light lights up, and it stays lit up until i shut the computer down.
avjguy2362
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Asus! For now, make sure the TPU and EPU switches ( If you have them ) are off! I had a similar problem 2 years ago and found that you really have to install their AI suite before you try using either of those MB features. My CPU light would not go off and I had other CPU's to test with, but somehow I froze the MB and the CPU light would not go off. Asus assured me it was a fluke and sent my another MB right away! I hope they had fixed that by now.
I can only say to make extra sure your 8 pin CPU cable from your PS is attached and working properly ( #2 in the list ).
I can only say to make extra sure your 8 pin CPU cable from your PS is attached and working properly ( #2 in the list ).
avjguy2362
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So day 2 of the build, I went back to his house and did the following things.
1: Check the TPU and EPU switches, which both were disabled.
2: Checked the cpu socket on the motherboard carefully for any bent pins, which there were none.
3:Tested my personal 670 in his rig, only to find that the same problem occurs.
4:Tested his 660 in my personal rig, which houses a 1000W power supply, only to find it STILL didnt work.
We're going by our local computer store today to check out what they think of this.
1: Check the TPU and EPU switches, which both were disabled.
2: Checked the cpu socket on the motherboard carefully for any bent pins, which there were none.
3:Tested my personal 670 in his rig, only to find that the same problem occurs.
4:Tested his 660 in my personal rig, which houses a 1000W power supply, only to find it STILL didnt work.
We're going by our local computer store today to check out what they think of this.
avjguy2362
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It certainly sounds like the 660 is bad. Odd it ran before putting the build in his case. The only other option may be that his PS is causing the problem. Did your 670 run fine when you re-installed it in your system?! Any possibility one of the pins in the 6 pin GPU PS cable is not contacting properly. Isn't there another 6pin GPU cable to compare to the one you were using? Do you have a simple volt/ohm meter? This picture shows the 3 pins on one side are 12v and the other are ground. Test each pair to make sure all three pins and corresponding grounds coming from the PS are appropriately 12 volts.
http://imageshack.us/photo/my-images/503/s75qcopper2qh7.jpg/
http://imageshack.us/photo/my-images/503/s75qcopper2qh7.jpg/
avjguy2362
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It could be the MB, but it's almost always the PS! You never mentioned the brand of PS, but here is a list of PS's that may help to figure out if the 550w is on the "not recommended list". I am going to sound a bit overboard on this, but I am one to nag at people to get a very high quality PS. They are boring. but critical. Too many people buy lots of watts for the least dollars and end up with frustration. It's the one component where getting the best deal is the wrong choice. Find the right PS and then try to find the lowest price on that PS. A high quality PS will last a very long time, 6+ years and many many builds, so they are worth spending the extra money. Stick with a Corsair AX, Seasonic or equivalent in the $150+ range and you will never have a PS problem again.
This list is actually is up to date as of Sept of 13:
http://www.eggxpert.com/forums/thread/323050.aspx
This list is actually is up to date as of Sept of 13:
http://www.eggxpert.com/forums/thread/323050.aspx
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