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Computer wont boot after CPU upgrade

Hey Guys,

I just upgrade from an i5 2500 to an i7 3770k as I'm starting to do a lot of streaming and my CPU has been giving me some problems.

Anyways, when I changed the CPU my computer turns on, but the monitors don't come out of sleep mode and nothing boots. I get the error code on my mobo that RAM is not installed. I tried resetting the ram 1 by 1 and in different channels but no change. I also tried switching to my old CPU and I am getting the same issue.

Not sure what to do next. I tried to check if I bent a pin in the CPU socket, but from what I can tell everything looks fine. I don't see why my RAM would all of a sudden go bad, but I would appreciate any help. Thanks!
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  1. Did you remember to update your BIOS to support Ivy Bridge cpus?
  2. MauveCloud said:
    Did you remember to update your BIOS to support Ivy Bridge cpus?


    I did not. I checked if my Asrock Extreme3 Gen4 was compatible on the site and it was, so I didn't think I would need to update the BIOS. But shouldn't my old CPU still run?
  3. I don't see an Extreme3 Gen4 at ASRock's website. If you mean the Z68 Extreme4 Gen3, it only supports an i5-3570k with BIOS P2.10 or newer. Yes, you should be able to boot it with the old cpu to perform the bios update.
  4. MauveCloud said:
    I don't see an Extreme3 Gen4 at ASRock's website. If you mean the Z68 Extreme4 Gen3, it only supports an i5-3570k with BIOS P2.10 or newer. Yes, you should be able to boot it with the old cpu to perform the bios update.


    Sorry, I forgot to mention it was the p67 extreme3 Gen4. www.asrock.com/mb/Intel/P67 Extreme4 Gen3/?cat=CPU

    I popped my old processor into the computer and its giving me the same boot problems unfortunately. Rather odd.

    Edit: I was able to get my old processor working. I thought my sticks were bad but they worked when i had them plugged in individually. The issue was trying to run them in dual channel mode. Now i need to test if this will carry over to the new processory
  5. OK. So I thought I would be able to run the new CPU not running dual channel with my RAM, but it is still giving me the error that RAM isn't installed. Not sure if I need to update my BIOS as you mentioned earlier despite the website saying the mobo is compatible.
  6. Best answer
    Unless you already have P2.10 bios you'll still need to update it - look at the "Since BIOS" column in the page you linked with the cpu support list for the P67 Extreme4 Gen3.
  7. MauveCloud said:
    Unless you already have P2.10 bios you'll still need to update it - look at the "Since BIOS" column in the page you linked with the cpu support list for the P67 Extreme4 Gen3.


    That was it. Updated the BIOS and I can boot with the new chip. However, I have still lost my ability to run my RAM dual channel, even with the old CPU. Not sure what happened there, but I guess I will have to live with it
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