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Help! Replaced CPU and now pc won't boot

I have an old Gateway GT5692 that came with a Foxconn RS780 Bengal mobo. I was very limited on money for upgrade so I purchased a AMD Phenom II X6 1045t as a replacement for my Phenom I X3 8450. Both are 95 watt cpus.

Officially my mobo only supports Phenom I cpus but saw online that as long as the bios was up to date it could handle a phenom II and may say unidentified cpu but still work.

Now PC starts lights, fans etc go on but can't even get into bios and nothing shows on screen either. I just was on the computer 15 minutes earlier.

I went back and checked all of my connections to no avail.

Any ideas?

1. Bad CPU?

2. Gateway not upgradeable?

Any help would be appreciated. Thanks in advance.
3 answers Last reply Best Answer
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  1. Best answer
    Gateway says: "Supports AMD® Socket AM2+ (940 pin), AMD Phenom™ (95 W), Athlon™ 64 X2, Athlon 64, and Sempron™ processors..."
  2. I guess you had it coming ....

    NEVER try to force a CPU series on a mobo that doesn't officially support it, especially if you have an OEM pc.
    I'm afraid that you have to either :
    Get back to old CPU .
    Or :
    start a new build because your mobo -even worse- supports DDR2 memory only, so if you want to get benefit from your new CPU you'll have to get new mobo & ram.

    Sorry my friend, but you're at dead end with that :(
  3. Thanks for the replies guys. I figured that might be the case. Looks like I will have to wait a few paychecks but will have to grab a new mobo + DDR3 Ram + Windows 7.
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