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CPU Overheated, Now Won't Boot (HELP)

post #1 of 12
Thread Starter 
I know this seems frantic and makes for an annoying first post, but I'm at a loss.


I was moving around big chunks of files last night, and my PC build just shut down. It's never happened before, and I haven't OC'd this build. I tried to boot it up again, and a 'CPU Overheated' error came up, but the only option was to continue by pressing f1.

It got through the initial boot/bios screen, showed the mouse on a blank black screen, and proceeded to flash between the regular mouse icon and the loading icon. 30 seconds later, it shut down again.


I blew out a lot of dust from the case, removed the heatsink/cpu fan and found that the thermal paste was very dry. I let it cool overnight, then cleaned it carefully with q-tips and alcohol, put on new thermal paste, and started it back up.



SAME PROBLEM. Blank screen, mouse icon (which is movable when I move the mouse)....nothing else.


Did my CPU fry, or is the fact that the mouse is showing and moveable an indicator that something else is wrong?
post #2 of 12
What kind of heatsink/fan do you have, just the stock one? Could be that it's not seated correctly, and/or the fan isn't working, causing it to overheat and shut down. Do you keep getting overheating errors, or did that overheating error just show up one time?
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post #3 of 12
Thread Starter 
Quote:
Originally Posted by b3machi7ke View Post

What kind of heatsink/fan do you have, just the stock one? Could be that it's not seated correctly, and/or the fan isn't working, causing it to overheat and shut down. Do you keep getting overheating errors, or did that overheating error just show up one time?

I only got the overheat error once, the first time I tried to reboot after it shut down (I stupidly tried to reboot immediately).

And yeah, I'm pretty sure the heatsink and fan are stock (Intel). The fan is blowing, and it feels very snug so I think it mounted alright.


I booted in safe mode and got this:




Which I'm not feeling too good about...
post #4 of 12
I mean, that's not necessarily a big problem. I'm no expert, but I would think you could just drop your Windows disc in the drive, and try to repair your Windows installation...
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post #5 of 12
Thread Starter 
Well here's what I just did:


Did a forced shut down, as it was stuck in some weird boot loop/loading phase.

I unplugged all of my external hd's, and left only the keyboard, mouse, and monitor.

I turned off the power supply, and unplugged the mobo for a few seconds, then plugged it back in.

I then tried a reboot in safe mode, which is where I got the above image error. After I closed that message, I had a blank screen, so I formally shut down through CTRL+ALT+DEL.

I tried booting up again in normal mode, and it actually booted! HOWEVER...Windows Explorer kept restarting itself with error messages, so I shut down yet again (formally).

I turned off the power supply after it had been shut down, unplugged and replugged, and booted up again in standard mode.




Now it's up and running.

Using CPUID, my temps:

Cores: 64C


Not sure what I did, but it seems to be fine? Still a bit on pins and needles.
Edited by thebeginning - 2/27/13 at 8:03am
post #6 of 12
I dunno man, technology is a weird thing, sometimes it just fixes itself with no apparent explanation. My thinking though, is that if your CPU is running @ 64C not under any load, that's really really worrisome. Depending on the temperature of the room the box is in, your CPU shouldn't really be that hot unless it's doing some serious work, even with a stock intel cooler. I would strongly encourage you to look at an aftermarket cooler for that thing, even something as cheap as a Hyper 212 EVO cooler (like 20-ish bucks) will take your temperatures down quite a bit.

As a point of reference, my house is is ~18-20C. My CPU idles between 27-30C, and at 100% load doesn't break 55C. Even with the stock intel cooler I used to have, my 100% load temps wouldn't break 70C running at stock clocks. So your idle and load temps will vary, depending on how warm or cool you keep your house, as well as what type of CPU you have. But I would say a good frame of reference is for idle temps to be between 28-35C, and for 100% load to be <70C. Others with more experience may correct me, but that's how I've always looked at CPU temps
Edited by b3machi7ke - 2/27/13 at 8:27am
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post #7 of 12
Thread Starter 
Yeah I think I may have mounted the heatsink/fan incorrectly, and may have broken a pin or two. Everything is up and running fine, but my idle (now ~60) and fully loaded (up to 100c!) are scary.



Is it possible that I could fix it that simply?
post #8 of 12
I gotta tell you, if you're running 100C under full load, you definitely have that heatsink mounted wrong. I would honestly recommend following the steps you took before, cleaning it off with rubbing alcohol and qtips, putting a rice-sized drop of paste on the CPU, mounting your HSF, and letting it sit for a bit (like an hour or two?). Then, fire it back up and see what the temps look like. If they're still at 45C+ just on startup, try it again. Honestly, there's no reason for your idle temps to be that high, unless you're working out in the middle of a desert with no AC. Buying a new heatsink won't fix your temperature problem right now, because even stock/crappy heatsinks shouldn't allow the CPU temp to be any higher than 40C at idle, unless your ambient temperatures are really really high...
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post #9 of 12
Thread Starter 
Yeah, I will.

What if I DID in fact break a pin or two, so that it won't mount? I'll just have to get a new fan/heatsink, no? I'm assuming those all mount with standard sizes (pin sizes and locations I mean).
post #10 of 12
You mean, break a pin or two on the motherboard? That's not going to cause the heatsink to mount incorrectly. If you mean you broke one or two of the mounting legs on the heatsink, then yes that could explain your problem. If it's not latched down nice and tight on the CPU, then the heat won't transfer and could explain your incredibly high temperatures. If you broke something on the heatsink, I would recommend going out and buying a cheap cooler, something like the Hyper 212EVO. It won't cost you much (depending on your country), and it is a significant upgrade over a stock heatsink.
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