PC Wont Turn On *HELP*

okay so my pc won't turn on and I was thinking it is a problem with the power supply however the LED on the motherboard still lights up, i just can't get the computer to start. Does this mean it is still a problem with to power supply or could it be something else?
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More about wont turn help
  1. Is this a TRS-80, or an old Apple ][?
  2. What? no
  3. in other words: system specs please.
  4. Antec TP-650 650W PSU
    2GBx4 G-skill DDR3 10600 RAM
    Sapphire hd 6870
    AMD Phenom II x4 925 2.8GHZ
    ASUS m4A785TD-V EVO
    Western Digital 1TB Caviar Black 3Gb/s
  5. it couldn't be any of that because I have had my computer for over 2 years and I haven't recently installed anything. I just found that it was turned off and I can't turn it back on now but like I said there is still power going to the motherboard but idk if it could still be a problem with the power supply
  6. Do the fans spin up? If so I would say it's the board but I would test with a different PSU in the machine before hand.
  7. Did something crawl into the PSU and die? Any chance of other foreign object in or on the mobo? Reseat everything, including all power cables and RAM. You don't need to reseat the CPU.
  8. No, the fans don't start up either. Ill try resetting everything though
  9. Good idea...
  10. Try booting with a single stick of RAM, I've fixed my computer this way more than once. They tend to just sort of die sometimes.
  11. another good idea... :)
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