Ok, this is my motherboard: GA-945PL-DS3 (rev. 2.0).

When I bought this PC it came with Intel Pentium 4 3.0 GHz. Now, I bought new processor Intel Core 2 Duo E6700 2 x 2.66 GHz. I removed old CPU and I placed new CPU and nothing happened. I heard few beeps but system failed to boot. When I put back old CPU again (Pentium 4), system failed to boot again. No beeps, no BIOS, only black screen. Fan works and power is on but system fails to start. Can someone tell me what is happening? Thanks in advance.

  • Did you follow proper ESD precautions? What motherboard do you have exactly? I can't even find your processor on Intel's website. Those Pentium 4 products I do find cannot be replaced with a Core 2 Duo product. Who told you the Intel Pentium 4 3.0 GHz could be replaced with a Core 2 Duo because you got bad advice. – Ramhound Apr 26 '14 at 18:23
  • @Ramhound Guy in service that sold me CPU. Unfortunatelly, I'm an utter noob when it comes to hardware. – Branislav Lazic Apr 26 '14 at 18:31
  • He sold you something you can't use. It also likely damaged your existing hardware. – Ramhound Apr 26 '14 at 18:32
  • @Ramhound Can you specify what hardware it could damage? – Branislav Lazic Apr 26 '14 at 18:35
  • Core2Duo and P4 3Ghz both came in a LGA 775 socket configuration: en.wikipedia.org/wiki/LGA_775 – horatio Apr 26 '14 at 18:36

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