I think I just Killed My CPU

matthewprince said:
Doesnt every motherboard have a fail safe now where it shutsd down if its going to do damage?

My Asus P7P55D Pro does as i mistakelnly put a massive overclock (something like 5ghz) and it refused to let me save it and restart, instead it just said "unsuccesful overclock"

Matt
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The unsuccessful overclock is just a form of self correcting bios to allow boot after you put in silly settings. It wont help if the system is stable enough to boot into windows, but high enough voltage to fry the cpu in half an hour.

OP. To be sure of a clean cmos reset, its best to remove the cable from the PSU to the motherboard (including the ATX+12 cable), remove the battery, and put the clr cmos jumper on the short/clear position, and then leave it for 30 minutes before removing the jumper, refitting the battery and finally reconnecting the cables to the PSU.

Reasons are the battery and PSU both supply power to the cmos chip, while the jumper drains the power, sometimes a few seconds shorted will reset it, but on some motherboards the battery/psu will still be supplying enough power to retain some settings, and likely cause corruption and boot failer.
 
Do you have a speaker plugged into the speaker header on the motherboard? It may give you a beep code to help you fault find!
 
Just incase check what I said about arcing in the CPU socket.

It is pretty hard tho to kill modern CPUs, but high vcore or VTT with 45nm and smaller processes has been known to kill them before in hours or days.
 
Just my 2p, but it could just be a coinsidence and in fact the power supply has gone pop. Any funny smell in it?

I would try a different/spare PSU if you can. At least you can say it's not the PSU if it still doesn't work.

I had a similar issue that just happened one day, turned out to be ram, it had all suddenly decided to go faulty, even though it was fine for about a year before hand.
 
Check your psu, last time i had an issue like this it turned out to be the psu, Unplug the psu form everything and remove it form the case, looking at your atx header youl see a green wire situated in the mddle of the header and a black one next to it, witht he psu unplugged formt he wall put a thin pice of wire in the green pin and into the black one next to it to make the circuit, now put the atx header down making sure the wire is still in place, plug in the psu to the wall and switch the wall socket on, this should start the psu and fan spinning. if this doesn't happen the psu is the issue.

I had a psu that would start but couldn't carry a load, i found this by testing the psu as above, the after still experiencing issues so i turned the psu off at the wall after the above test and added a dvd rom drive to the psu and a hard drive and couple of fans, this prooved to stressful for the psu and it wouldn't start with these attached, its the easiest thing for you to test yourself and a prime candidate for a problem.


Just for referance you want the green to the black one to the right of it

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Kanifee said:
Just for referance you want the green to the black one to the right of it
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Thanks, That was going to be one of my next questions . . . and again its something I can do in that 30 minutes while waiting for the CMOS to clear. . . . Along with taking the Dremel to the Motherboard tray . .. Love the idea of having recesses and holes to pass cables through . . . shame the recess are so deep they come right up to the edge of the side of the case. . . . few minutes with the Dremel should sort that out
 
OK this has been the first chance i have had to spend some serious time on working with the dead PC. . . . Yesterday I simply removed the power cable, turned the CPU off, removed the Battery and shorted the CMOS Reset jumper. . . So today I started again. First of I removed all the components, and checked the Socket and CPU for signs of Arcing . . nothing.

Having Got the CPU out I shorted the Green and Black wires and powered it on . . . Fan Span Up . . . That's Good. . . . Turned off added some Hard Drives and DVD's . . . Couple of Fans to the cables . . .Turned on and everything spun into life . . . so I think it is fairly safe to say that the PSU is working.

Removed CMOS Jumper, and fitted Battery.

Cleaned TIM from CPU and Cooler and added some more (Antec Formula Five) remounted CPU and fitted the cooler. Fitted Speaker and Power Switch and put 1 stick of RAM into Slot 2 on the MB. . . connected power cables to MB . . Fitted the Radeon 4850 Graphics card and powered on. . . . CPU fan twitched, and the 'Phase' LED's on the MoBo Flashed . . . and that is it.

Moved Stick of RAM down the Slots trying each slot in turn . . . Each time I switched on all that happened was the CPU fan twitched, and the 'Phase' LED's on the MoBo Flashed . I repeated the exercise with the other stick of RAM with exactly the same results.

Only conclusion I can come to is that I either have a dead Mobo and or a dead CPU so thank you all for your advice
 
It could still be the PSU, it might be partially dead. Maybe the GPU is drawing too much power from it and it kills it (it being half dead).

Try my previous advice, try a new/old PSU.
 
if anything is dead I bet it's the motherboard, it's always the one to go with overclock testing, just shows up a board that was gonna die soon anyway.
 
Hmmm . . . Just tried removing the 4850 and replacing it with an old PCI card and then powering up . . . Still no go although the 'Phase' LED's stay lit for a bit longer.

Going to have to see if I can get a PSU from somewhere as the one I have in my old rig is a real cheapy and doesn't have all the required cables
 
i cant beleive it, this has just happened to my system too.:eek:

ive tried cmos clearing. removed memory etc. and wont boot, just a little click of the fans. will try the a psu tomorrow - if the one in my other pc fits.
pc was working fine, left it running seti@home to find it this afternoon powered off & dead.
 
This seems like a good time to mention one of my friends had something similar on an old rig he had lying around. Clear the CMOS and try to boot, fans twitch then turn off, then nothing til resetting the CMOS, and repeat. I always had the impression there was a short somewhere - but we didn't spend much time on it at all because it was old and rubbish anyway.
 
looks like the psu. disconnected the thing, joined up the green pin & one behind on the atx connector. psu fan started - a little bit of smell noted, connected up the case fan and it didnt have enough balls to spin it properly.

my psu in the other system isnt suitable to try as its hp m atx.

so now looking for a new psu such as:
OCZ StealthXStream 600w Ready Power Supply


http://www.overclockers.co.uk/showproduct.php?prodid=CA-023-OC&groupid=701&catid=123&subcat=

seems reasonable, only havnt got a top vent on my case!
 
Aleman said:
I mentioned no names ;) Still CMOS battery removed . . . Time for a quick drink and try again I guess. The funny side of this is that this is a new rig, that my wife paid a good chunk towards . . .because at Christmas she turned my old one on . . . and took the PSU and Graphics card out . . . not looking forward to telling her today when she wakes up :rolleyes:
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why did she do this? not get the presents that she wanted?
 
doggles said:
why did she do this? not get the presents that she wanted?
Click to expand...

:D:p

Well panic over, It was the CPU . . . Everything back to default in the BIOS and a Prime95 running . . . so far core temps around 53-54C . . . see what its like after an hour

Whats really annoying is that the new CPU makes a noise like a dying Hard drive (Chatter chatter Chatter) . . . so That's going back on RMA (Sorry OC) . . . the old one was whisper quiet . . . and I had gone so far along the path of making it queit as well.

Thanks to everyone for their help . . . When I finally get the courage up to OC this rig again, I'll certainly know where to come for good advice
 
Yes, it's them there elctrons rattling inside. ALl seriousness it isn't your CPU making the noise, could be a cable catching on the CPU fan etc.
 
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