Help. Comp is not working after CPU upgrade!! Please HELP!

I just switched out my Athlon 64 3000+ for a new 3700+ I bought off of ebay. When I started up my comp, I get absolutely nothing on the screen and my video card fan stays at high speed, where as when I usually start it up, It slows down after a few seconds. (I have the Radeon x850xt pe)

I thought the new CPU was to blame, so I took it out and clean the Artic Silver off of the heat sink and cpu with isopropyl alcohol and reinstalled my old cpu...Same problem, blank screen.

Did I somehow fry my motherboard or something? I'm so pissed right now.
Someone please help. :x
10 answers Last reply
More about help comp working upgrade help
  1. Try clearing the cmos
  2. Quote:
    I just switched out my Athlon 64 3000+ for a new 3700+ I bought off of ebay. When I started up my comp, I get absolutely nothing on the screen and my video card fan stays at high speed, where as when I usually start it up, It slows down after a few seconds. (I have the Radeon x850xt pe)

    I thought the new CPU was to blame, so I took it out and clean the Artic Silver off of the heat sink and cpu with isopropyl alcohol and reinstalled my old cpu...Same problem, blank screen.

    Did I somehow fry my motherboard or something? I'm so pissed right now.
    Someone please help. :x



    DId you ground yourself and unplug the power cord before you touched anything?

    After you were done did you plug everything back in the same way?

    Did you forget to plug in the CPU fan header or the +12V PWR connector?

    Unplug the power cord and let the machine sit for a few minutes then CLEAR the CMOS plug it back in and try again.

    Ground yourself and reseat your memory and all your cards.

    If that doesn't work remove everything from the system except the CPU and see if your board beeps.

    Then start putting one component back in at a time.


    What are your full specs by the way????
  3. ouch.

    first, check ALL your power cables going to mobo, make sure everythings plugged in correctly.
    make sure the heaksink is fully mounted on the CPU
    test your PSU (short the green wire with any black on the 24 or 20 pin connector, press the power button does the psu turn on?)
    check the PSU voltages
    Clear your CMOS
    switch out the GFX card
    all else fails, unplug everything and take out the motherboard battery...let sit for 1 day, plug it all back in and power it up.
  4. Quote:
    I just switched out my Athlon 64 3000+ for a new 3700+ I bought off of ebay. When I started up my comp, I get absolutely nothing on the screen and my video card fan stays at high speed, where as when I usually start it up, It slows down after a few seconds. (I have the Radeon x850xt pe)

    I thought the new CPU was to blame, so I took it out and clean the Artic Silver off of the heat sink and cpu with isopropyl alcohol and reinstalled my old cpu...Same problem, blank screen.

    Did I somehow fry my motherboard or something? I'm so pissed right now.
    Someone please help. :x


    bought off ebay? you sure its not a dud sold to you?

    bios update? your 3000 might have been a 130nm vs your new 90nm cpu?
  5. Thanks guys, but I fixed it after calling Asus tech support. It was a grounding issue. I took my mother board out and ran it outside the computer case and it worked. The tech told me to put electrical tape on the mb mounting posts and I did just that. It seems to be working so far! :D
  6. Quote:
    Thanks guys, but I fixed it after calling Asus tech support. It was a grounding issue. I took my mother board out and ran it outside the computer case and it worked. The tech told me to put electrical tape on the mb mounting posts and I did just that. It seems to be working so far! :D



    Does it work with the 3700+ ?

    What were the chip markings?
  7. Yes it does work. What markings are you referring to?
  8. Quote:
    Yes it does work. What markings are you referring to?



    The chip markings printed / laser engraved on the CPU heat spreader.

  9. Oh, well it's a little late for that. The chip is already installed. :P
  10. Quote:
    Oh, well it's a little late for that. The chip is already installed. :P


    Never mind then.

    As long as it's working and it really is a 3700+ it's all good :-D
Ask a new question

Read More

Motherboards CPUs