Bootloop(?) after CPU upgrade, fans turn on for a second before turning off, this repeats every few seconds

[Lord Cluttermonkey]

I just upgraded my friends' PC with my old hardware, but it won't POST. After pressing the power button the fans turn off for around a second before shutting off. The fans turn back on for a second by themselves after a couple of seconds and it keeps doing this until I pull off the power cable. His old setup works fine, and the new one worked without issues for years on my PC. The monitor gets no signal at any point.

 

The monitor and everything in the build has been tested before and they work. I've tried replugging all the cables, no help there either.

 

The computer had an i5 2500, 16GB of RAM, a GTX 970 and a 600W corsair 80+ gold power supply. I gave him my old i7 4770 and a b85 motherboard.

 

It can't be due to a lack of power because I've run that i7 for years with only a 450W PSU.

Edited December 2, 2018 by Lord Cluttermonkey
4770 not 3770

[Raudi_]

2 minutes ago, Lord Cluttermonkey said:

I just upgraded my friends' PC with my old hardware, but it won't POST. After pressing the power button the fans turn off for around a second before shutting off. The fans turn back on for a second by themselves after a couple of seconds and it keeps doing this until I pull off the power cable. His old setup works fine, and the new one worked without issues for years on my PC. The monitor gets no signal at any point.

 

The monitor and everything in the build has been tested before and they work. I've tried replugging all the cables, no help there either.

 

The computer had an i5 2500, 16GB of RAM, a GTX 970 and a 600W corsair 80+ gold power supply. I gave him my old i7 3770 and a b85 motherboard.

 

It can't be due to a lack of power because I've run that i7 for years with only a 450W PSU.

B85 IS 4TH GEN

[AngryBeaver]

15 minutes ago, Lord Cluttermonkey said:

I just upgraded my friends' PC with my old hardware, but it won't POST. After pressing the power button the fans turn off for around a second before shutting off. The fans turn back on for a second by themselves after a couple of seconds and it keeps doing this until I pull off the power cable. His old setup works fine, and the new one worked without issues for years on my PC. The monitor gets no signal at any point.

 

The monitor and everything in the build has been tested before and they work. I've tried replugging all the cables, no help there either.

 

The computer had an i5 2500, 16GB of RAM, a GTX 970 and a 600W corsair 80+ gold power supply. I gave him my old i7 3770 and a b85 motherboard.

 

It can't be due to a lack of power because I've run that i7 for years with only a 450W PSU.

Go back and check everything to make sure it is making good contact/connection. You might also remove the board and make sure nothing is under it which can cause a short. Take out the cpu and make sure you didn't bend any pins (unless the cpu was never removed when being transplanted).

 

If it worked before, but itsn't now just make sure everything is making a good connection and also try doing a bios reset via the jumpers.

[Lord Cluttermonkey]

4 hours ago, KingCry said:

B85 IS 4TH GEN 

It's an LGA1150 board and has worked fine for the last four years.

 

My CPU is a 4770, I made a typo

[Skyyblaze]

This behavior can happen if the board can't detect the RAM properly, test different sticks in different slots and make sure no CPU pins are bent.

[Lord Cluttermonkey]

It boots fine on the table, there was something on the case shorting it out. He ordered a new case and everything works as it should. Thanks