New Intel Cpu won't boot

[Hollow021]

So I bought my buddy's rig from him and wanted to replace the i7 in his pc with my i5 but neither one of the computers would boot now? I tried resetting cmos but nothing changed. My desktop does nothing when I press the power button but all the lights inside are on and the lights on the motherboard are on without blinking. The other pc turns on for 1 sec and shuts off. I'm not sure what I'm doing wrong...

 

[suchamoneypit]

Are you guys using the same CPU socket?

[DesolationGod]

What was the i7 and the i5? Are they the same socket and is your cpu compatible with the other board?

[Hollow021]

1 minute ago, DesolationGod said:

What was the i7 and the i5? Are they the same socket and is your cpu compatible with the other board?

i5 7600k and i7 8700

 

[Dylanc1500]

2 minutes ago, Hollow021 said:

i5 7600k and i7 8700

 

They aren't inter-compatible. The pinouts are different.

 

Kaby Lake

Coffee Lake

[PopsicleHustler]

1 minute ago, Hollow021 said:

i5 7600k and i7 8700

 

They use different chipsets, you cannot just replace one with another.

[DesolationGod]

intel doesnt usually do backwards compatibility

[MojangYang]

They are not compatible.

[LukeLinusFanFic]

It's very confusing. The chip can fit in the socket, but the socket and chipset are different. 

 

I have heard of people managing to run coffee lake in older boards, but that's beyond unverified, risky, unlikely and not recommended at all. 

[Nyeeks]

it doesn't work next time look up your motherboard cpu support list

[CarlBar]

Also why would you want to replace an 8700 with a 7600?