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Booted Without Heatsink, Did I Fry CPU?

post #1 of 14
Thread Starter 
So I got a new CPU cooler but had some issues with monitor not displaying anything. So I reseated the CPU (i5-2500 at 3.4GHz and went on to see if POST would show up. Yes, without a heatsink, I'm retarded. The POST showed up perhaps 10+ seconds later and I shut the PC down. Now attempts to boot (with cooler in place) result in the fan spinning for 3 seconds and then shutting down.

Was 10+ seconds plenty for the CPU to fry? Is there a chance it didn't?

This whole thing is quite ironic when you think about it.

EDIT: When I attempt to boot, both green and red power LEDs light up for a second and then everything shuts off.
EDIT: "Solution".
EDIT: Can't get to POST anymore although PC seems to be "running".
Edited by hleV - 2/14/16 at 3:44am
post #2 of 14
It should have shut itself down before any serious damage occurred.

Kill the power to your PSU and clear the CMOS, then try booting again.
Sherlock
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Sherlock
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post #3 of 14
Zero chance this fried anything, power would be automatically cut when the CPU hits a certain temp defined by Intel to avoid any damage.

To troubleshoot your current issue, try placing the heatsink ontop of the CPU without any mounting screws/bolts/whatever and see if it POSTs.

Apparently too much mounting pressure can cause issues.
post #4 of 14
Thread Starter 
I did try reducing the mounting pressure (in fact I had completely removed the screws) before but that didn't help. Resetting CMOS didn't help either. If the CPU is not fried then I'm not sure what is going on. I crushed it with the heatsink? It still worked after I "crushed" it on my first attempt to install the heatsink. The setup is literally the same as when I successfully booted without heatsink.

When I attempt to boot, both green and red power LEDs light up for a second and then everything shuts off.
Edited by hleV - 2/11/16 at 4:45pm
post #5 of 14
Do you have a spare motherboard? It may be a dying motherboard and not a dying CPU.

Usually CPUs have overheating protection that would prevent it from ever overheating. Voltage though ... that's another matter and it does kill CPUs.

It is possible though to crush a CPU with a heatsink, but you would have to try really hard. Most good heatsinks do have mechanisms to prevent overtightening but not all do. What brand of heatsink was it?
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Trooper Typhoon
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post #6 of 14
It really won't hurt it. I had a C2D system lose its heatsink in shipping and it ran like that for two years before the owner asked why it was slow (running at 200mhz throttled, never shut down). Its still kicking today.
post #7 of 14
Thread Starter 
It's a CM Hyper 212 EVO. And yes, I suppose the mobo is sort of dying. I have issues with it such as delayed boot input (have to wait like 10 seconds till POST), attempts to restart result in multiple auto restarts along the way so I'm better with shut down → PSU off → PSU on → boot to save time, integrated network card not really working, etc.

Gonna see if I can do something about it tomorrow, with a clear mind.
post #8 of 14
Thread Starter 
It's definitely a quirk of my dying motherboard. I managed to "revive" it, hopefully it'll hold as long as I do not budge the PC case too much. Not sure exactly what I've done, but it involved inserting/removing various components, tightening/loosening the heatsink, at one point it looked like it's all OK until I positioned the case vertically. Welp, at least the CPU is fine.
post #9 of 14
Have you checked for crushed / bent CPU pins? Managed to damage one recently myself.

Aside from damage all of my recent motherboards have had similar quirks from new, 4 or so Z77 ASsRock boards and at least one Z87 gigabyte board. Works today but not tomorrow, and back to fine the next day along with every variation in-between.

Repeat to the end of time.

Pretty depressing.
post #10 of 14
Thread Starter 
I can't get to POST anymore. The fans are spinning and all that, but literally nothing ever shows up in the monitor. I've checked the CPU and the pins (they're on mobo side) and they seem to be fine. The only things that are connected to the mobo (Intel DB65AL) are: case, PSU, CPU, heatsink + fan (tested without heatsink as well). CMOS resets, CPU reseats, etc., nothing seems to help.

I guess I'll have to have it checked at a PC repair shop on Monday as I'm out of ideas and don't have spare LGA 1155 CPU or mobo for testing.
Edited by hleV - 2/13/16 at 11:02am
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