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Solve : Computer shuts down after 3 to 5 seconds? |
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Answer» I have a computer that is about 5 years old. It is running a dual boot on separate HD's, (XP and Win 7), AMD 3200, 8rda3+PRO, 3 sticks of ram, ATI radeon 2600 HD, dual sata wd hd's. All components have been tested individually, and work fine, and I ran a memory test on the ram, it is good, but the PC starts, then shuts down after 3 to 5 seconds. If I unplug the PSU for 10 seconds, the I can restart the PC, but it again starts for 3 to 5 seconds and shuts down. By removing all of the unnecessary components, I can get to the bios screen, however, when I plug in the hd's, it reverts back to the same problem. I bought a new PSU and when I plugged it into the MO, the PC started by itself when the PSU was half plugged in, which is when I replaced the MO. I am hoping someone has an idea or two. Thanks Is the CPU fan operating properly ? ? however, when I plug in the hd's, it reverts back to the same problem. I figure the hard drives may be the problem. Do you have another computer? If you do, use it to BURN a LIVE CD of linux (whichever distribution you prefer). Then remove the hard drives from the other computer and boot from the CD. If the computer boots up to linux and stays on, then it's your hard drives. Remember to change boot order for the CD!it may seem like a long shot but try a diffrent set of RAM and a diffrent hdd as one of the device's could have failed, i have had a simmilar problem before and i replaced my harddrive and it has sorte the problemA HDD/RAM ISSUE will NOT cause this scenario...Is it at all possible the case is the problem? I don't know is the case's power on switch could do something like this, but maybe it could be something like a short. I'd check to make sure the motherboard isn't making contact with the case anywhere, or even try starting it outside the case. Although, personally, I wouldn't want to do that until I've exhausted other options…. It sounds odd that it would be fine until you plug in the hard drives. I'd consider trying to reset the CMOS settings and double checking to make sure everything is hooked in correctly and nothing is making contact with the case.Hard drives have been tested in another PC, work fine. Have not tried another case yet, but did remove wires going to power button and attempted to start..no luck. Removed MO from case, placed on non-conductive surface and tried to start, again, no luck.When you removed it from the case to test what exactly was hooked up ? ?When I removed it form the case, I hooked up one stick of ram at a time, going through all three sticks, the MO, tried with 2 different video cards, the keyboard, and the monitor. I tried it both with and without the hard drive.Minimum components to POST: 1 stick of RAM CPU/fan Vid card monitor Keyboard Mouse PSU So ti sounds like you did it properly to test... The only 2 other things i can think of is the PSU may be faulty even though new... Or your MBoard has a crack/defect in it... What brand and wattage is this PSU ? ?The PSU is an LPK2 400WATT, and the MO has been replaced. Me thinks the PC is possessed with a poltergeist!...HE HE. I am really stumped.I don't think its the case because I removed the BOARD from the case and still the same problem.Let me get this straight. You have replaced the motherboard and Psu and it is still doing the exact same thing as before? Did you replace the board like for like? Or is it a different board? Have you made sure that you have connected the wire to the internal connecter near to the cpu, properly? |
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