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loud88gt

Help with 8770w and K4100M

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Hello, I'm new here and heard this was the place to go for help.  I've got an HP 8770w that came with the Firepro M4000 originally.  I bought a Nvidia K4100M and the corresponding heat sink as a replacement.  I've installed it but get a black screen at startup.  It almost seems like it tries to start and then the light on my mouse goes out and it tries again.  I was going to delete the old drivers and install the new ones after it started up.  Should I install drivers first or am I missing something else?  I can easily do the disassembly/reassembly stuff but my knowledge is limited when it comes to software.  Any help you guys can give me is greatly appreciated!

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      Would really like some help with this.
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