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Computer does not start up w/ no beep.

I recently built a PC a couple weeks ago and just recently, my PC does not start up, well it does but I will describe in detail in just a moment.

When I power on my PC, the power lift turns on and it sounds like its on, but i do not hear a beep or anything from the motherboard. I have removed the ram and tried putting it in another slot for RAM and still nothing. Now the wierd part, if I leave the PC on with just the power light, after about 5-10 minutes, I hear the beep and the PC turns on and runs fine until I shut the PC down, than the same problem occurs. When it runs everything works fine, I can game and all that good stuff.

Specs:

AMD FX-6300 3.5GHz 6-Core Processor
Asus M5A78L-M LX PLUS Micro ATX AM3+ Motherboard
Corsair 4GB (1 x 4GB) DDR3-1333 Memory
Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive
ASUS Radeon HD 7750 1GB
Thermaltake TR2 500W ATX Power Supply

Does anyone have an idea of what the problem is, the motherboard is an ASUS M5A78L.
7 answers Last reply Best Answer
More about computer start beep
  1. try update motherboard bios , when it normally on
  2. carlo_bigtunes said:
    try update motherboard bios , when it normally on


    How would I update my bios? I am not sure how to do that.
  3. Best answer
    try this
    download bios file from here https://www.asus.com/Motherboards/M5A78LM_LX/#support
    copy it to usb flashdisk
    change name to AMIBOOT.ROM
    turn on your pc with ctrl + home pressing until beep 4 times.
  4. carlo_bigtunes said:
    try this
    download bios file from here https://www.asus.com/Motherboards/M5A78LM_LX/#support
    copy it to usb flashdisk
    change name to AMIBOOT.ROM
    turn on your pc with ctrl + home pressing until beep 4 times.


    Ok so I downloaded the latest BIOS and copied it on the USB drive than changed the name of the BIOS to AMIBOOT.ROM. I plugged it into the PC and started the PC up but I couldnt start it up or press Ctrl - Home because the keyboard isnt working, the mouse light is on but that is it.

    What should I do?
  5. just try, cpu +motherboard+ 1stick ram +keyboard , until get into bios
  6. carlo_bigtunes said:
    just try, cpu +motherboard+ 1stick ram +keyboard , until get into bios


    It isnt getting into the Bios at all, no beep nothing. All that I have currently plugged in is the CPU, MOBO, RAM and Keyboard. Nothing at all.
  7. carlo_bigtunes said:
    just try, cpu +motherboard+ 1stick ram +keyboard , until get into bios


    Also any clue as to why my PC would boot up and I would hear a beep when I press restart but does not start up if I completely shut down the PC?
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