Erm, CPU stopped working...

CheeZy

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I had* an Athlon XP 2500 barton - overclocked to 3200 on an A7N8X Deluxe. It worked great for the month that I had it, no problems even though I leave it on all day and often max it out a 100% CPU usage rendering stuff or gaming.

But Yesturday, I was playing some Unreal Tournament 2004, and about 1 hour into it my computer just shuts off. The "Power on" LED was still lit on the case. I pressed it to turn it off and restart the computer thinking it was a random crash (the PC had never crashed before by the way, not even a blue screen)

But it wouldn't start. I unplugged the power cable, unplugged all periferals, plugged them back in and tried to start it. The power button does not work so I try turning the PSU on and off (there is a switch on the back of mine). The motherboard's "System powered" green LED is lit showing there is power to the system, however when I turn it on, the fan's twitch a little, and the Fan and Case LEDs flash on but the CPU doesn't even start. Nothing else happens when I try to start it, the bios doesn't beep, the screen doesn't change, the harddrives don't start.

Ah by the way, it was also a really hot day, 85 degrees outside, and about 80 (I'm guessing) in my room.

When I opened my case after a few attempts of turning it on, I noticed it was unusually hot, like very unusually hot. I touched the heatsink to get an idea of how hot it was and it burned me slightly, it was very hot. Well, put them together and I figured the CPU is fried. But usually when CPUs die from overclocking they first make some random restarts or crashes or blue screens, I never got any and infact I've never seen the Core temperature go higher than 55C, and that would be after 4 hours of gaming. The Case temp is also cool, 25-35C depending on how long it's been on. I have 2 case fans, a side one blowing in and a top one blowing out. Also my heatsink rocks, Thermalright SLK-800U - picture: http://www.overclockers.com/articles726/sl1.jpg

I took off the heatsink to see what's up with the processor - I had some Arctic Silver 5 on it, however I'm not the one who put it on, I had someone else do it. Thing is that most of the Silver had spread off the core and infact you could easily see the core besides for some thin splotches of the thermal paste. There wasn't all that much on the base of the heatsink either, but then again I think the Arctic silver is supposed to get absorbed by the heatsink. Oh well, I don't know if that's bad or not, I'm going to guess no.

But I'm still left with a processor that doesn't work.

Could anyone who's maybe had experiance with this before help me out? Is it definatly dead, or did for some reason the PSU blew out (350W, I only have 1 harddrive, 1CDrom drive, 2 sticks of 256 PC3200, GeforceMX440, and a Sound Blaster Live soundcard - the 350W should be more than enough.

Also I went out and got an Athlon XP 2800 Barton just incase the chip is dead but I haven't installed it yet.

I read somewhere that you could try to reset the CMOS, but I don't want to mess with that. I didn't overclock RAM and the voltages for the CPU (1.776) and the FSB (200x11) were obviously fine considering they worked for a month and the CPU was always between 35 and 55C

<P ID="edit"><FONT SIZE=-1><EM>Edited by CheeZy on 04/25/04 11:44 PM.</EM></FONT></P>
 

PukePile

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The problem might be that arctic sliver 5 as far as i know amd advises not to use it becuase its conductive.So if your chip is fried that might be why.Let me see if i can find you link that talks about AS 5

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PukePile

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Here i got a link for you. And just so you know useing AS 5 voids your warranty but then again so does overclocking <A HREF="http://www.xtremetek.com/info/index.php?id=14" target="_new">http://www.xtremetek.com/info/index.php?id=14</A>

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scottchen

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Pukepile let's try to help him before we tell him that he's f*cked.

First of all you don't know if the processor's the thing that's dead, the fact computer's not booting could be either of the 5,

A. Processor
B. Motherboard
C. Ram
D. Video card
E. Power supply

Just because the mobo light comes on doesn't mean it's not dead.

Since your fans could be powered on, then your power's probably still alive, but it may be what killed your system, what brand is that power supply? If it's generic, then quality may be crap, and overvolted, and killed all your components.

Test the easy things first, use only 1 stick of ram, try both separately, if it boots, then means 1 stick of ram's dead, if it doesn't boot, then 3 possibilities...
A. 1 stick of ram's dead
B. Both ram are fine
C. Both sticks dead.

Next step, get a new power supply, a new stick of PC3200 ram, and a new video card, make sure the retailer has some sort of return policy, or borrow them from friends. Try the new power supply, the new ram only, and the working video card. If computer still doesn't boot, then you've narrowed it down to the CPU/Motherboard.

Then it's your choice what to try next, I perfer getting a new mobo though, just personal preference, since it's probably cheaper. Install all the new components and the old CPU, just use AMD's stock cool, for the sake of easy installation and use the stock thermal pad. If computer still doesn't boot, then you'll know definenlty the CPU's dead.

That's not the worst part yet, now you just know the CPU's truly dead, now you'll need to take all your components to a working computer, and test your rams through memtest86, test your video card, 3dmark or whatever, if those passes, then you'll know VGA/ram's both fine.

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scottchen

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Next thing, clean that CPU throughly, make sure you get rid of all the AS5, pack the original AMD heatsink with its thermal pad, and request for a RMA from AMD, with some luck, you'll get a new CPU, they don't care much, don't really check.

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scottchen

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Request a RMA from Asus for that motherboard, tell them your problem, and send it back to them, they won't even check, they'll just send you a new one.

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scottchen

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Wait you could save yourself from all this trouble, if you simply take your computer to a local retailer, and let them do a full system diagonasis, they'll charge, but it'll save you time, and the effort to get the components.

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CheeZy

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Thanks for the replies :) Just for the record the graphics card works as it's in this (old) computer right now, the ram and other stuff I can't test in this one though.

I would lean towards the PSU or processor being the problem, the PSU was abit on the cheap side, came with a $40 case, even though the case was excellent (window, 2 fans, 6 LEDs), and that's also a possibility. Would it really kill all the components if it over-volted? Man :( scary thought

By the way, would the retailers actually get it working or would they just tell you what's wrong. I haven't got anything illegal but I wouldn't want them going through my stuff. Not to mention a few sensitive files from a game I'm working on.<P ID="edit"><FONT SIZE=-1><EM>Edited by CheeZy on 04/26/04 01:42 AM.</EM></FONT></P>
 

scottchen

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As an employee of a computer store, I can tell you we honestly don't give a sh*t what you have on your computer, I mean we do make fun of you if you have animal p0rn on it. But we don't touch anything, many of the PCs we repair, let's say 15% uses pirated version of Windows, and about 40% or more has pirated files. So don't worry.

As for fixing it, it depends on the problem, but in your case, doesn't seem so, they'll just tell you what's wrong.

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CheeZy

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I can tell you we honestly don't give a sh*t what you have on your computer, I mean we do make fun of you if you have animal p0rn on it.
Lol all in good taste though ;)

Alright well, I'll try a new PSU, the fact that the fans should atleast start when I power the system should be a hint that the PSU has been buggered. I doubt my chip reached the 80C needed to melt it anyway considering all the cooling I have on my case.