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Old CPU boots fine but when new CPU put in there is no display

daveg64
By daveg64
in Troubleshooting
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Go to solution Solved by Fasauceome,

The CPU could be dead. The B250 chipset is compatible by default with every 7th gen Intel CPU so updating the BIOS won't make a difference. Since your system still works with the pentium, you didn't break anything when installing the new CPU.

 

Or the CPU is rejecting your ram and you need to try with different ram or placing the ram in different slots.

Posted

I have a b250m-k motherboard and have upgraded from a pentium g4560 to an i5 7400 however when I installed the i5 the only thing that happens is all the fans run except the GPU which runs for a few seconds and switches off. After this I re-installed the pentium and it booted perfectly to BIOS. I have updated my BIOS to the latest version and attempted to the CMOS but I am unsure if this worked. Any help would be greatly appreciated thank you!

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The CPU could be dead. The B250 chipset is compatible by default with every 7th gen Intel CPU so updating the BIOS won't make a difference. Since your system still works with the pentium, you didn't break anything when installing the new CPU.

 

Or the CPU is rejecting your ram and you need to try with different ram or placing the ram in different slots.

I WILL find your ITX build thread, and I WILL recommend the SIlverstone Sugo SG13B

 

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Draws 400 watts under max load, for reference.

 

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How many watts do I need? Seasonic Focus thread, Userbenchmark (Et al.) is trash explained, PSU misconceptions, protections explained, group reg is bad

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1 minute ago, Levent said:

Was that i5 second hand? 

yes but apparently working.

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1 minute ago, Fasauceome said:

The CPU could be dead. The B250 chipset is compatible by default with every 7th gen Intel CPU so updating the BIOS won't make a difference. Since your system still works with the pentium, you didn't break anything when installing the new CPU.

oke thanks for the help

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52 minutes ago, Fasauceome said:

The CPU could be dead. The B250 chipset is compatible by default with every 7th gen Intel CPU so updating the BIOS won't make a difference. Since your system still works with the pentium, you didn't break anything when installing the new CPU.

 

Or the CPU is rejecting your ram and you need to try with different ram or placing the ram in different slots.

You guys are such legends! I moved my RAM stick to the other slot and it booted! Thanks a lot

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