shahdad Posted September 2, 2006 Share Posted September 2, 2006 hi allany help would be great,my pc shuts off by itself after a whilei turn it on, come back and its off. it even turned off while i was just using it.when i try and turn it back on it will not turn on. i have to unplug it, wait about 10 sec, then plug back in and then it turns on.i opened the case and the only thing ive noticed is that the light on the motherboard goes out after the 10 sec when its unpluggedcpu is celeron 1.8mb is asus p4p800slet me know if anything else is needed, thx Link to comment Share on other sites More sharing options...
bonestonne Posted September 2, 2006 Share Posted September 2, 2006 most motherboard have those LEDs as indicators, to show if it has an active powersupply.1) you may have a bad powersupply2) your BIOS batter may need to be replaced3) you may not have consistent power supply for the computer from the wallyou may also want to check the power button leads, make sure they aren't falling off or anything.a cable may be loose, something may be touching something that shouldn't be.there are more questions than solutions for this. Link to comment Share on other sites More sharing options...
shahdad Posted September 2, 2006 Author Share Posted September 2, 2006 thanks for the reply,i think it might be the batt b/c the power supply is good and all leads are connected. i dont suspect any cables as they are fairly newbut one questionif the battery is low that could cause the comp to turn off even if its plugged in and turns on initially? Link to comment Share on other sites More sharing options...
bonestonne Posted September 2, 2006 Share Posted September 2, 2006 well, the battery is a last resort thing, and its only something to consider if the computer is 7+ years old.just because cables look good, doesn't mean they are. it may be internal damage to the powerpack. which can be caused by a power surge. if at all possible you should get the leads checked on the pack.my best thought on the subject is that theres a short circuit somewhere causing it. Link to comment Share on other sites More sharing options...
shahdad Posted September 2, 2006 Author Share Posted September 2, 2006 yup looks that way, short somewhereand its not the battery, just took it out and its in the green ill have replace cables one by one and go from therei called asus tech support, he didnt even care about the problem, he checked to see if it was under warranty and it was so he said call the rma dep during the week and get it replaced, lol, ill take a new mobobut for now ill screw around and see if i figure out where the short isthanks Link to comment Share on other sites More sharing options...
shahdad Posted September 2, 2006 Author Share Posted September 2, 2006 i forgot to askwhat are the chances that its overheating?fan speed is at high rpm, all voltages are in range, cpu temp was about 40C and board temp was about ais that too high? and do mb have a auto shut off if temp goes too hight? Link to comment Share on other sites More sharing options...
RJARRRPCGP Posted September 2, 2006 Share Posted September 2, 2006 It's likely C.O.P. (computer overheat protection, Asus' anti-processor overheat protection) being triggered. The overheat shutdown value may be set to a value that's too low in the BIOS. Link to comment Share on other sites More sharing options...
shahdad Posted September 3, 2006 Author Share Posted September 3, 2006 i cannot find anything in the bios that resembles C.O.P. where i can change the valueall i can find close to that under the power setting is apm configuration where there are many settings i can choose from but nothing to do with cpu tempthere is a throttle slow clock ratio - thats set at 50% - dont know what it is thoughunder hardwarre monitor, cpy temp rises to about 40C and the mb temp stays around 25Cim going to leave it in bios and monitor the temps and see if it shuts down at higher tempsif i wanted to swap out hte power supply what do i have to check to make sure its compatible? does it just have to be atx?thanks Link to comment Share on other sites More sharing options...
bonestonne Posted September 3, 2006 Share Posted September 3, 2006 your temps are normal.although the overheat protection may be set too low, thats not something i would have thought of. my motherboard is too old for the overheat protection and whatnot, so i can't really give any advice on it. Link to comment Share on other sites More sharing options...
LLXX Posted September 3, 2006 Share Posted September 3, 2006 Those are idling temperatures, they'll be much higher under load.I'm thinking it's overheating, especially when I readwhen i try and turn it back on it will not turn on. i have to unplug it, wait about 10 sec, then plug back in and then it turns on.Also, does it make a strange sound (much like a high-pitched squealing or whine) when it turns off? If so, the shutoff was due to something shorting out and activating the overload protection of the PSU. Link to comment Share on other sites More sharing options...
twig123 Posted September 3, 2006 Share Posted September 3, 2006 when i try and turn it back on it will not turn on. i have to unplug it, wait about 10 sec, then plug back in and then it turns on.Also, does it make a strange sound (much like a high-pitched squealing or whine) when it turns off? If so, the shutoff was due to something shorting out and activating the overload protection of the PSU.Your Power Supply Is Faulty!!! That is where the high pitched sound is coming from!Replace it ASAP, or it could fry your mainboard! ...also, since the power supply is faulty, check the Capaciters in the upper left by the processor to make sure none of them are bulging/swollen or look like battery acid coming out. If there is, then you need a new mainboard as well. Link to comment Share on other sites More sharing options...
Spyvie Posted September 3, 2006 Share Posted September 3, 2006 (edited) I’d say your power supply is failing… Make sure all your fans are spinning, including the CPU cooler fan and the PSU fan then clean the dust out of your case. Also make sure to blow some canned air into your PSU to blow the dust out of it, you’ll be surprised how big the cloud of dust will be.I’ve seen a few power supplies do exactly what you’re describing… they heat up and shut down and the only way to get them back online is to unplug them for a minute or two. You can get a new one at Newegg for about $40… There should be a temperature monitoring utility for your motherboard on the disk that came with it, if not or if you’ve misplaced the disk you should be able get it off of the Asus support site. Download Prime95 or OCCT to put your processor under %100 load and check the temps, CPU temp should be under 60c Edited September 3, 2006 by Spyvie Link to comment Share on other sites More sharing options...
cyberloner Posted September 3, 2006 Share Posted September 3, 2006 POWER SUPPLY buy new one Link to comment Share on other sites More sharing options...
Aegis Posted September 3, 2006 Share Posted September 3, 2006 (edited) You need a new power supply.EDIT: On second thought, that particular PSU might have a bit more power than you really need. Edited September 3, 2006 by Aegis Link to comment Share on other sites More sharing options...
shahdad Posted September 13, 2006 Author Share Posted September 13, 2006 and the problem was....... power supplynew one in and all is goodbought one from staples, 465w for $50good enough for now Link to comment Share on other sites More sharing options...
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