evilkoal Posted January 29, 2009 Share Posted January 29, 2009 i recently switched computer cases, and a component fried along the way. i made sure to ground myself out before touching any of the components, i am not a retard. everything gets power (if only for a split second) so i know it is not the power supply. both graphics cards are still good, and i believe the ram is good also. when i power on my computer it just flashes on for a split second, then turns right back off, becoming unresoponsive until i clear the CMOS and try to power it back on again. my LCD poster still displays what it is posting (or trying to post), so that is making me believe that it is the CPU. the lcd poster stays on after the computer powers off, and says CPU INIT which is making me believe that it might be my cpu. i just need some input before i call newegg or intel and try to con them out of a cpu lol PC SPECS:Mobo: ASUS Rampage FormulaCPU: Intel Core 2 Quad Q6600 @ 2.4GPU: 2x Nvidia 9800gtxRAM: 8gb synced @ 1066PSU: 850w Zalman zm850-hpSC: Supreme FX2 Link to comment Share on other sites More sharing options...
IamBatosai Posted January 30, 2009 Share Posted January 30, 2009 Does it stay on long enough for it to make any beeps of any sort? Most mobo's have different number of beeps for whats wrong. If not make sure you plugged the cpu power cord into the motherboard. I know thats stupid. But it happens. Lol Link to comment Share on other sites More sharing options...
evilkoal Posted January 30, 2009 Author Share Posted January 30, 2009 well, now it is staying on for a bit, but keeps powering off randomly... never stays on long enough to boot into the os. randomly powers off in bios as well. everything is plugged in correctly, so im stumped... so damn hard to type on a ps3 controller lol Link to comment Share on other sites More sharing options...
bben46 Posted January 30, 2009 Share Posted January 30, 2009 Sounds like something is killing your +5v supply. As that is used by everything, it could be anything. If at any time during troubleshooting you see or smell smoke, or hear a frying sound or a pop, pull the plug immediately. I use a power strip with a double pole power switch, but those can be hard to find. First, a simple Power supply check. Unplug everything including the MB. Plug in 1 hard drive (preferably an old one that is not important but still works) to the power connection only. When you turn on power, it should spin up. let it spin foe a short while, listen for changes in speed. That shows that at least the PS is working. If the PS is bad, well, nothing else will work. Now, remove everything that can be taken out. including all ram. Remove any video, audio, modem, and any other extra cards. remove the floppy drive, CD drive. unplug any USB device, including your keyboard & mouse. disconnect your hard drive. What you have left is a bare MB & Power supply. Leave the CPU fan hooked up. See if it will power up - the only indication will be the CPU fan & power led. If you get the led & no cpu fan shut down, there is a problem with the 12 V supply that feeds the fan. You may get some diagnostic beeps, that is expected as there is no ram or anything else. Now, if your MB has a built in video, plug your monitor into that, if not plug in the video card & power up. you should see something on the monitor - probably a series of error messages about missing stuff. Next, a single stick of ram. Then a keyboard, next a mouse add each item, one at a time, testing between each. Eventually you should see the failure and know what is causing the problem. Link to comment Share on other sites More sharing options...
evilkoal Posted January 31, 2009 Author Share Posted January 31, 2009 ok thanks bben, ill try that :) ill post back when i figure out what it is for sure Link to comment Share on other sites More sharing options...
evilkoal Posted February 2, 2009 Author Share Posted February 2, 2009 okay, took everything out and put it back in piece by piece. turn out it is the motherboard or the cpu.though it will stay on without the cpu, it powers itself off after i save the bios. i even tried removing the battery and leaving it out for 5 minutes, then turning the pc back on, but that failed as well. still randomly powers off in bios, so it isnt safe to flash them... i think i am going to call asus for an rma. Link to comment Share on other sites More sharing options...
Dark0ne Posted February 2, 2009 Share Posted February 2, 2009 Stupid question, but have you used the proper copper extender bolts, or whatever they are, to raise the mobo off the metal chasis? I tried to troubleshoot a similar problem with a friend who couldn't work out why his system kept on powering off straight away...just turned out he hadn't used the bolts that raise the mobo from the chasis so the electricity wasn't flowing properly. Simple way of debugging this might just be to take the mobo out of the case and try running it loose. Link to comment Share on other sites More sharing options...
nosisab Posted February 2, 2009 Share Posted February 2, 2009 Certify the case's power push button is not hanged at on... this cause exactly the OP's issue. PS: Well. if ti's the problem the machine powers up (or try to do) as soon you plug the cord. Link to comment Share on other sites More sharing options...
bben46 Posted February 2, 2009 Share Posted February 2, 2009 To add to Robin's comment. If the standoffs that raise the MB are not in place under the MB, then it is possible for the circuits on the MB to short to the chassis (case). The purpose of the standoffs is to raise the MB high enough above the chassis to allow some air flow, and to keep it from touching the metal. Also, some standoffs may require insulating washers, usually either fiber or plastic, to be installed on some of the stand offs to prevent an electrical short. The documentation on the MB should say if you need these and where they are needed. The power supply used on PCs is a switching type, and requires some minimum electrical load to work. If there is nothing hooked to it, it will shut down. That's why I recommended testing it with a hard drive. There is a protective circuit in most switching power supplies that cause it to power down if there is a short. That may be what you are seeing. Link to comment Share on other sites More sharing options...
evilkoal Posted February 3, 2009 Author Share Posted February 3, 2009 nah, i have installed everything correctly, i had made sure the risers were all in place qiute a while ago, even felt the plate the mobo is on for any that i couldnt see, as my cousin recently had that problem ... power will stay on all day if there is no power to cpu, but that just means that the mobo isnt proessing anything and that there isnt a short.. everything detects correctly as well giving me even more cause to believe it is the mobo. it even powers itself off when i get into the ezflash menu, so i dont want to attempt flashing the bios as this could lead to even more problems... Link to comment Share on other sites More sharing options...
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