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First-time build, Graphics Card (and RAM) install issues, please help.

Hi there. I just built my first computer tower and I'm having a little bit of trouble.

First off my graphics card seems to be having issues, mainly in the fact every time I install it, it will either work for a few minutes before my display becomes pixelated, or not display at all. Any help/advice would be very much appreciated. Also, I have installed the Drivers from the CD, and when disconnected the integrated VGA works fine, but when connected the integrated VGA doesn't work.

Motherboard: MSI 760GM-P23 (FX) AMD Series Motherboard - Micro ATX, Socket AM3+, AMD 760G, 1333MHz DDR3, SATA II (3Gb/s), RAID, 7.1-CH Audio, Gigabit LAN, USB 2.0 (760GM-P23 FX)

Graphics Card: XFX One Radeon HD 5450 ON-XFX1-DLX2 Video Card - 2GB DDR3, PCI-Express, 1x Dual-Link DVI-I, 1x D-Sub (VGA), 1x HDMI, Single-Slot, Low Profile, Heatsink

PSU: 750W

Secondly, I'm having issues with RAM. I have 2x 4GB DDR3 sticks installed, but the BIOS only recognizes 4096MB. Windows 7recognizes that 8GB is installed, but only 4 is usable (Running 64-bit OS).
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  1. Best answer
    I think the GPU is faulty, to make sure try it on another system, see what happens ! If the problem persists then replace it.

    Try RAM on different slots. It could be a bad slot on MB.
  2. lonewolf7 said:
    I think the GPU is faulty, to make sure try it on another system, see what happens ! If the problem persists then replace it.

    Try RAM on different slots. It could be a bad slot on MB.


    Unable to try the card on another system, but will see if a friend of mine will test it. With the RAM I found both slots recognized one of the sticks, but found my computer wouldn't boot with the other stick, So I guess I have a defective stick of RAM. Quick question: could the defective RAM be linked to being unable to use the graphics card?
  3. Its unlikely. Try the GPU with the working stick of RAM, see what happens, else try your friends system to test the GPU.
  4. lonewolf7 said:
    Its unlikely. Try the GPU with the working stick of RAM, see what happens, else try your friends system to test the GPU.


    Found the problem! GPU was indeed faulty. Placed another card in the system, worked perfectly. RAM and Graphics Card getting replaced for working models, Thanks for the Help!
  5. You are welcome.
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