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Computer Won't Start


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#1
sfgiants674

sfgiants674

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ASRock M3A770DE AM3 AMD 770 ATX AMD
AMD Athlon II X3 445 Rana 3.1GHz 3 x 512KB L2 Cache Socket AM3 95W
MSI N460GTX Cyclone 768D5/OC GeForce GTX 460 (Fermi) 768MB 192-bit GDDR5 PCI Express 2.0 x16 HDCP
Antec BP550 Plus 550W Continuous Power ATX12V V2.2 80 PLUS Certified Modular Active PFC
GeIL Value PLUS 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
SAMSUNG Spinpoint F4 HD322GJ/U 320GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5"

So i recently built a computer and put it together. For the first day everything was working great and in the middle of the second day everything suddenly shut off.It would not turn back on, but it would flicker for a half a second every time i unplugged the power supply and put it back in.I spent a couple hours trying to fix it including replacing the power supply which didn't help, but when I took out the video card and started it up, it started fine. The video card was put in right and tried numerous times to try and fix it. So for me it sounds likes the video card is dead. I just wanted to check to see if there is any other problem there could be before I replace the video card. Thanks for the help in advance.
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#2
phillpower2

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Hi sfgiants674 :D
The PSU, GFX card and the MB (pci-e slot) could all be the issue.
With the power cord removed open up your case and check all your
connections from the PSU are secure, when you removed the GFX card
and started up was the CPU fan working?
Check the MB for any signs of damage such as scorching or bad caps,
does the GFX card itself look ok in particular the fan/s.
If everything looks safe try the GFX card in the other pci-e slot &
as a long shot try clearing the BIOS by removing the silver CR2032
battery on the MB for a while and then replace it.




Battery .jpeg courtesy of rshaffer61
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#3
sfgiants674

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I tried every one of those ideas that you gave me. The cpu fan worked fan when the video card was no longer in the computer. I don't see any marks or anything wrong with the motherboard. The card itself looked fine and I tried clearing the BIOS with no help.

Edited by sfgiants674, 11 January 2011 - 04:01 PM.

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#4
phillpower2

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Best couple of suggestions I can make would be first remove the MB and do a bare bones set-up on a piece of cardboard (make sure it is larger than the MB) only connect the PSU, the GFX and only insert 1 stick of Ram.
You will then need to short out the 2 power on pins on the MB header to get the PSU to activate, you can use a small flat bladed screwdriver or a paper clip bent into a U shape, this is perfectly safe if you do not touch anything else, the idea is to see if we can get a BIOS screen if you do you can then add one component at a time until you find the problem component, you must power down and remove the power cord from the wall before adding a component, second suggestion try a known working PSU, it is not unknown for new components to be bad, third suggestion try and loan an ordinary PCI graphics card (not pci-e) again to try and get a BIOS screen.
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