PC restarts after 3 seconds from being turned on

[Mo2teye]

I had a project to do so needed a friend's i7 and i swapped CPUs.

When i powered the system on, it turned on for about 3 seconds then it restarted on its own. It kept on restarting till I took the power cable out.

Tried to turn the second PC on and it has the same problem

My Pc specs :
- P8P67 pro
- i5 2500
- cfx MSI 7950 twin frozr 3
- XFX pro series 850W
- 16 GB corsair vengeance

Friend's PC specs :
- MSI z77a-g45
- i7 3770
- MSI 7950 twin frozr 3
- Crosair CX 750W
- 16 GB kingston hyperx blue


I took his i7 and RAM for a render project and this happened after i swapped the CPUs.

What could be the problem here ? Any solution you guys could suggest ?

 

[GigaChunk]

Try clearing the CMOS (take the battery out of the motherboard for about a minute, or press the clear CMOS button on the IO if you have one)

 

[dugdiamond]

could be a faulty PSU !!!

 

[castleite]

as above, if that doesn't work your going to need to do a windows re-install as swapping and changing cpu's often creates errors in the system that 9/10 times take way to long to fix, this is usually the case for me anyways i cant say for everyone else

 

[Mo2teye]

Resetting CMOS didnt work, and PSU is fine since its working on another system normally.

And i doubt its a windows issue since i cant even reach windows to do an install. It turns off before I have an output on the screen

 

[Yemi]

Had the same problem, to bad I can not remember what was my problem.
The problems I know I had were timing from the memory which wasn't correct in the bios and low fan speed warning settings.

 

[chudley]

try using failsafe defaults in bios, i had something like this a few years ago like above, I cannot remember what caused it but failsafe allowed me to start again.

 

[Mo2teye]

Well I didnt figure out where the problem is, but i got the system running.

For some reason, the system wouldnt get to BIOS screen and kept on restarting when the RAM sticks are in dimm 3 or 4 ( if we consider the first dimm the one on the left and closest to the CPU , so 1| 2| 3| 4| ) however the system boots normally when the sticks are in dimms 1 and 2. If there is any stick in 3 or 4 it wouldnt run no matter what there is in the other dimms ( empty or full ).

Cant make any sense of what is happening honestly, can anyone explain ?

 

[Snortan]

If you put the i5 back, does is still do that?
Do you still have access to you friends pc? Try his RAM in your pc. Mainly because I just googled your mobo + ram and it seems that more people have encountered the same problem as you.
If it does the same, dimm 3 and 4 might be faulty.

 

[airdeano]

i believe on the newer Intel platforms using DDR3 RAM, you should be placing
the RAM in slots 1| and 3| or 2| and 4| this will "team" the dual channel.

i had a similar issue on my ASUS M4E-Z switching from 2500k to 2700k. it took
alot of testing, but i finally went and entered BIOS, used optimal settings, F10 saved,
rebooted, re-enter BIOS and then filtered the BIOS. and it started to boot normally.

 

[Mo2teye]

If you put the i5 back, does is still do that?
Do you still have access to you friends pc? Try his RAM in your pc. Mainly because I just googled your mobo + ram and it seems that more people have encountered the same problem as you.
If it does the same, dimm 3 and 4 might be faulty.

Yea it still does the same after i returned the original CPUs, and i tried my rams ( corsair vengeances ) and another set of dominator platinums ( mine but from another rig ) and still doesnt work when in slot 3 and 4.

i believe on the newer Intel platforms using DDR3 RAM, you should be placing
the RAM in slots 1| and 3| or 2| and 4| this will "team" the dual channel.

i had a similar issue on my ASUS M4E-Z switching from 2500k to 2700k. it took
alot of testing, but i finally went and entered BIOS, used optimal settings, F10 saved,
rebooted, re-enter BIOS and then filtered the BIOS. and it started to boot normally.

Tried to fiddle with BIOS settings on the board and fixed ram speeds and timings and all that and still same problem



I think in the end its just the board's RAM dimms have died on me or something, I still cant make any sense in all this

 

[Snortan]

I would say that dimm 3 and 4 are faulty.

 

[(SS)Stu]

You should look at your motherboards user manual to see the combinations of memory placement that are compatible.
Usually if you have a motherboard with 4 DIMM slots you have to place 2 modules of memory in slots 1 and 3, or in 2 and 4. They should be colored black or blue.

 

[Snortan]

Usually if you have a motherboard with 4 DIMM slots you have to place 2 modules of memory in slots 1 and 3, or in 2 and 4. They should be colored black or blue.

You don't have to. In your example you can occupy slot 1 and 2 and RAM will run in single channel just as happy. Of course if you do 1 and 3 you get dual-channel which is better. Leaving this aside, he already said that the pc keeps restarting when RAM is in slot 3 or 4.

 

[Deejeta]

Since this started since you took out and swapped cpu's. Did you bend any pins in the process?

 

[PittPyro]

will a P67 even run an ivy?

If so you may need a bios update

 

[ArthurDnB]

I got this problem on a friend build, another friend placed the standoffs at the wrong spots(i think this was the cause). I teared the system apart and turned it on out of the case and It booted OK.

After this I placed the standoffs at the right place and the computer booted right when it was in the case