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Solve : Computer random shut downs? |
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Answer» Hey I’m new this site and this is my first post, and my problem is that my computer has recently started shutting down during the boot up, I didn’t change anything with the hardware for this to happen it just started happening, it also sometimes randomly shuts down while using the computer after i get it to turn on, it takes about 9 attempts of turning the computer back on to try and boot it up, there are no WARNING signs or shut down process, the computer simply turns off. Welcome to the CH forums. How did you do this" i checked and made sure it is not a heat issue and everything was running normally" ? truenorth I used speed fan to check the temps of my CPU, GPU and such and there what there supposed to be at, mostly below 50 degressQuote from: geek hoodlum on August 07, 2011, 06:57:20 PM Hi, check also if you have any blown, burst, bulged, or leaking capacitors on your motherboard. From the looks of it most of them are fine, but i just noticed 2 that have a very slight buldge at the top but none are leaking, do you think the that the little buldge is the problem?This can be the issue, However I would also reccommend trying another power supply in the machine. You stated Kernel Power errors, so the PSU is a likely culprit. Try to borrow one from a FRIEND of equal or greater wattage and see if the problem stil occurs.oran3e1, i have a capacitor on my motherboard that is slightly bulging (all the others are completely flat). i received the computer from my neighbor in that condition. the computer has always worked well, and according to the neighbor, always worked well when he owned it. what i am trying to say is that a bulging capacitor does not necessarily cause adverse behavior that you would notice. I respectfully disagree...when they bulge they are getting ready to fail...Quote from: ejames82 on August 08, 2011, 05:20:20 PM ...what i am trying to say is that a bulging capacitor does not necessarily cause adverse behavior that you would notice. Quote from: patio on August 08, 2011, 05:37:34 PM I respectfully disagree...when they bulge they are getting ready to fail... I think you're both saying the same thing: not necessarily cause adverse behavior that you would notice leads to they are getting ready to failthank you for the respect you have shown me, patio and Computer_Commando. my post was, and is, meant to provide info in regards to oran3e's issue and also show respect to all. i have supplied pics of the bulging capacitor. it is next to the 'E' (ethernet jack). it also has a brown dot in the center of the capacitor. i don't know what that dot is. it could be leakage, which could be a fair guess, but i can honestly say the computer works quite good. it's not buggy at all and is fast enough that you wouldn't think it had a bulging capacitor if you didn't know it did. i am using it right now to type this and post these pics. http://img708.imageshack.us/img708/9387/july811.jpg http://img171.imageshack.us/img171/4463/july811011.jpg a little background on this computer. this capacitor has looked like this for about 2 and a half years. there has been no noticeable change. i plug the computer into an APC uninterruptable power supply that has a battery. my guess is that the ups has benefitted the computer. possibly helping the capacitor itself (or should i say possibly allowing the wear to be minimal). i would never suggest that a bulging capacitor is a good thing. i know that this capacitor can erupt at any time and the computer will quit working permanently (i don't plan on re-soldering a capacitor), or leak and cause erratic behavior and/or failure.. on the other hand, it may continue to work for who knows how long. or how well. thanks for the respect.The one you show isn't all that bad, and it's only one of them. The UPS has nothing to do with "helping the caps". UPS is 120VAC, caps are probably 25VDC, completely independent from one another. In general, caps are "for smoothing the output of power supplies", i.e. the PSU. http://en.wikipedia.org/wiki/CapacitorAs an electronics tech, I can tell you that I see two things horribly WRONG in those pictures. 1. That bulging cap has already failed, and it's leaking. It can be shorting a critical voltage to ground and is definitely not doing its part to filter that DC Rail. 2. That entire mobo is FILTHY. Dirt on electronic components is like throwing a blanket over a heating element. Heat builds up under that dirt and parts fail. Dirt between the legs of ram chips and other IC's can look like a piece of wire, or iron filings. Clean up that motherboard! Some compressed AIR can do wonders with a mobo like that. I've saved hundreds of ram chips that tested BAD, but were only just dirty. After a bath, they worked just fine. Check with "Badcaps.com" for info on repairing that mobo. Good Luck, Quote from: Kurtiskain on August 08, 2011, 04:30:25 PM This can be the issue, However I would also reccommend trying another power supply in the machine. You stated Kernel Power errors, so the PSU is a likely culprit. Try to borrow one from a friend of equal or greater wattage and see if the problem stil occurs. I already tried using a different power supply with the same voltage, the shut downs still occur, and i looked and i think there are actually 3 or 4 buldging caps, im starting to think this is the problem.Quote from: oran3e1 on August 10, 2011, 02:18:06 PM I already tried using a different power supply with the same voltage, the shut downs still occur, and i looked and i think there are actually 3 or 4 buldging caps, im starting to think this is the problem.Probably is. Replace the mobo or replace the caps, if you have the skill to do so.Quote from: oran3e1 on August 10, 2011, 02:18:06 PM I already tried using a different power supply with the same voltage, the shut downs still occur, and i looked and i think there are actually 3 or 4 buldging caps, im starting to think this is the problem. In that case yes, Caps would point to that issue. Most small pc repair shops OFFER cap replacement (I know we do). our charge is $25 NZD per cap however so if your motherboard is cheap, it may be worth getting a replacement board. |
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