I dropped my CPU from 1m to wooden floor

noobinpc

Prominent
Nov 15, 2017
40
0
530
Hi! I opened my old desktop PC today and the GPU locker broke and when I showed the processor to my brother, the CPU dropped to wooden floor from about 1m and when I try to start my PC my monitor says: No Signal. Is it the broken GPU lock or dropped CPU? I am worried!
 
Solution
Ok, so unless I'm mistaken that CPU only has contacts on it and the "pins" are actually on the motherboard, not the CPU. So it's doubtful bent pins are the problem unless you bent them while installing the CPU back into the motherboard. Probably a good idea to remove the CPU and check the pins on the motherboard with a magnifying glass of some kind to make sure you did not bend any of them while reinstalling the CPU.


Also, did you reapply thermal past and reinstall a cpu fan when you put it all back together? Most systems will not start if the motherboard does not detect an RPM signal from the CPU cooler fan unless that option is turned off in the bios. By default it usually won't start without it.

It's also possible that you DID...
Kind of hard to say without knowing what hardware you have. Some CPUs have pins, some have contacts for the pins on the motherboard to contact. If your CPU has pins and you dropped it then it's a good chance you bent some of the pins. Unlikely the slot lock for your GPU is the problem but if it WAS you could simply place the PC case on it's side to make sure gravity is not pulling it out of the slot and see if it boots.

Most likely you have damaged the CPU or have failed to reconnect something properly when you put it back together. Why did you take the hardware out in the first place?
 

noobinpc

Prominent
Nov 15, 2017
40
0
530
Thank you. I'll try tomorrow if the problem was the GPU, and my CPU has only pins that is in contact to the mobo and I took the parts off because I am building a PC for surfing in the net and for school projects.

 

noobinpc

Prominent
Nov 15, 2017
40
0
530

And the PC has Intel Core i3 2120
 
Ok, so unless I'm mistaken that CPU only has contacts on it and the "pins" are actually on the motherboard, not the CPU. So it's doubtful bent pins are the problem unless you bent them while installing the CPU back into the motherboard. Probably a good idea to remove the CPU and check the pins on the motherboard with a magnifying glass of some kind to make sure you did not bend any of them while reinstalling the CPU.


Also, did you reapply thermal past and reinstall a cpu fan when you put it all back together? Most systems will not start if the motherboard does not detect an RPM signal from the CPU cooler fan unless that option is turned off in the bios. By default it usually won't start without it.

It's also possible that you DID somehow break the CPU internally by dropping it. Seems less likely, but anytime you drop anything electronic there is potential for damaging it.
 
Solution

noobinpc

Prominent
Nov 15, 2017
40
0
530

Yes I took off the CPU fan cable from mobo maybe the cable is not conpletely in. Thank you for your answers,I am tryong these tips today :)
 

noobinpc

Prominent
Nov 15, 2017
40
0
530

Is the a big chance of that the CPU itself is broken inside
 
I don't think I'd say BIG chance. But I would certainly say A chance.

Might want to take a look at all the metal contacts on the side that faces the motherboard, and make sure none of them are screwed up or damaged too. Probably might need a magnifying glass or really good reading glasses to see it up close and get a good look. Also might want to look at the pins on the motherboard the same, and make sure none of those are bent or damaged.

Also, the CPU fan cable is only supposed to attach to the fan header in one way. Make sure you have it on there with the notch in the cable located in the same position as the cutout on the fan header. It CAN accidentally get put on backwards, but you have to almost TRY hard to do that because it won't want to easily go on wrong. But I've seen it done plenty of times.

Also, make sure that it IS the CPU_FAN header, marked just like that on the motherboard, that you are connecting the CPU cooler fan to. There may be other fan headers in the same area but it must be the CPU_FAN header you connect it to or it won't work.

Does the CPU fan come on when you power up the computer? If not, then something is clearly wrong because that should happen no matter what else is wrong.
 

noobinpc

Prominent
Nov 15, 2017
40
0
530

Alright, got my self magnifying glass. Thank you so much for your help!
 

noobinpc

Prominent
Nov 15, 2017
40
0
530

Every fan turns on while starting the PC. I put the CPU fan to the same place where I took it from.
I am not sure is the connector the right way I didn't look at it that much. I am going to open the PC side panel again today, to check that everything is fine. I can send you some picture from the inside if that would help!
 
Sometimes pictures help, but usually they are unclear/poor quality/bad light and it's hard to tell anything. This is what you want to make sure of. The "key" needs to be aligned with the slot as you can see here.



03_c05.jpg



 

noobinpc

Prominent
Nov 15, 2017
40
0
530
yep, I think I broke the CPU, tried all the tips and when I connect my keyboard in, the numlock, scrolllock and capslock lights comes on and instantly goes off

 

genz

Distinguished
A big chance? It's almost a definite if you are over the height of 5ft. The CPU wires are about a quarter of the length of your hair. If you were that small this drop is probably like being dropped from low earth orbit. Sure you're not made of metal, but there's also a lot of weight attached to those thin threads (in the form of the rest of the 3 billion or so thin threads, and the CPU packaging) making it fall faster than you would.

 

noobinpc

Prominent
Nov 15, 2017
40
0
530

What the heck are you talking about?
 

Dave_McG

Commendable
Apr 23, 2016
61
0
1,660
It's probably not the GPU lock.I broke mine on 2 boards and between the PCIE plug and screws I haven't had any problems with them. It sounds offhand like either bent pins or scratched contacts on the CPU.

 
Can't be bent pins, at least not on the CPU, since it doesn't have any. Could be damaged contacts on the CPU which we've already established but you are correct in suggesting that as a possibility.

Wouldn't be the GPU lock anyhow, because all that does is hold the card in place.

Honestly, if it were me, I'd probably just find a used compatible CPU on ebay, something higher end than what you have now like an i7 which you can find used fairly cheap these days, and try that. If it still doesn't work then it's most probably an issue with the motherboard like you bent the pins or shorted something out. Bench testing is your friend.

http://www.tomshardware.com/faq/id-1753671/bench-troubleshooting.html
 

genz

Distinguished


65nm process = 65nm trace width. Trace width is actually 2700 times thinner than the smaller 178um hairs. your CPU is a bunch of wires on a PCB essentially. One of them comes loose and game over.
 
I've never seen, or heard, of a trace coming loose from any circuit board unless the silicon wafer itself was completely broken or heat was involved and the trace was either burned or heated to the point where it lifted. I'm not saying it couldn't happen, because I imagine it COULD, but it sure wouldn't be my first impulse to go there.

I'd be a lot more inclined to think that perhaps a resistor could be damaged, or a higher fall would be required to damage more than what you'd expect from a 3ft fall to a wood floor that probably offers at least some measure of give unlike, say, concrete or asphalt, but I guess really anything could happen to anything at any given distance if you factor in Murphy's law.
 

alsmith

Distinguished
Oct 16, 2014
76
0
18,640
Is the floor damaged?

And check for cables inside the computer that may have come loose- the drop may have displaced one or more.
The same goes for any expansion cards- remove and reseat them.
Have you checked that the computer power plug didn't come a little loose- check all cables by removing then replacing them.
Fuses ok?
 
I think we already covered making sure everything is seated correctly and that nothing has come loose or unplugged, still, never a bad idea to double check those things. Even triple check in some cases. I've seen 8 pin 12vEPS connectors before that looked like they were fully seated, but were not, and that goes for the 20/24 pin connections as well. When messing around inside the case it is pretty easy to bump something slightly, which sometimes is enough to break a contact. Reseating all connections is never bad advice.

As far as fuses though, what fuses? I don't think I've seen a fuse anywhere on a modern PC except possibly inside the power supply, and you probably don't need to go messing around in there unless you know exactly what you are doing anyhow. Too much potential for injury to the uninitiated.