PC does not post

Hello,
My pc does not post, i have returned the motherboard but they found it not to be faulty. What can the problem be?
26 answers Last reply
More about post
  1. System specs?

    Our standard checklist and troubleshooting thread:
    http://www.tomshardware.com/forum/261145-31-read-posting-boot-problems
  2. ASUS AMD Socket AM3

    Major Brand DDR2-1066 2GB Memory Module

    Corsair Airflow Memory Cooler

    Zalman ZM-MC1 Fan Power Converter
    Vizo Starlet 80mm UV LED Case Fan - Blue

    Titan TFD-12025M12C 120mm Case Fan

    AMD Phenom II X2 545 Processor - 3.0GHz AM3

    Club 3D CGNX-G9824GI GeForce 9800GT Green Edition

    LG GH22NS40 48xCD-R / 32xCD-RW / 48xCD / 16xDVD / 22xDVD+\-R /
    16xDVD+R DL / 12xDVD-R DL / 8xDVD+RW / 6xDVD-RW / 12xDVD-RAM Se

    Cooler Master RC-310 Elite 310 Mid Tower Chassis - Black / Silver - 350W

    Seagate 1TB Barracuda
  3. It does not post at all. there is no sound from the onboard speakers.
  4. Are there any signs of life? Fans spinning? If yes, double check to make sure the 4/8 pin CPU connector is plugged in.
  5. al fan are spinning and all connecter properly connected
  6. Can you list the model of your Asus motherboard?
  7. ASUS AMD Socket AM3, AMD 770, 5200MT/s, 4xDual DDR2 1066, 1xPCI-x16, 2xPCIx1, 3xPCI, 1xATA133, 5xSATAII(Raid 0,1), 1x eSATA, Gbe R852.00
  8. Is this your motherboard?
    http://usa.asus.com/product.aspx?P_ID=KX5kXQSmyaQaXVEP&templete=2

    On the far right hand side of this pic, there is a white, 4 pin port. You have a 4 pin connector from your PSU plugged into that port?
    http://aoutletpconline.com/images/ASUS%20M4A78%20PLUS.jpg

    A 350W PSU is pretty small. It may not be enough to power the 9800gt. I assume it's an Cooler Master and came with the case?
  9. 4pin in corner conected. got 350w with case. just orderd a 585w though. gana try that
  10. What kind is the 585w PSU?
  11. john2vn said:
    4pin in corner conected. got 350w with case. just orderd a 585w though. gana try that


    Hi john2vn,

    You said your motherboard tested OK, If that is the case did you try a different brand of RAM?
    I have seen posts from people having trouble with certain combinations of MoBos and RAM.

    I had problems with G-Skill Ripjaws 1600 MHz and a Gigabyte P55A-UD3R MoBo.
    If my system was powered off for more than 8 hours or so the BIOS would not POST.

    I could hear it cycling through some sort of sequence but there were no beeps or anything sane.
    Bought a new power supply but no change, then after seeing posts in these forums I took computer
    back to the dealer and asked them to try different RAM (CORSAIR XMS3 1600 MHz), been working
    perfectly for two days now.

    This may not be your problem but worth a try.

    My system:
    Motherboard: Gigabyte P55A-UD3R
    CPU: Intel Core i7 CPU 860 @ 2.79GHz
    RAM: CORSAIR XMS3 1600 MHz
    Disk: 500GB Western Digital
    GPU: GeForce GTS 250 1024MB
    Monitor: ACI ASUS VH232H
  12. Gigabyte Odin 585 GE-P585A-C2 Power Supply - 585W
  13. Aimetal said:
    Hi john2vn,

    You said your motherboard tested OK, If that is the case did you try a different brand of RAM?
    I have seen posts from people having trouble with certain combinations of MoBos and RAM.

    I had problems with G-Skill Ripjaws 1600 MHz and a Gigabyte P55A-UD3R MoBo.
    If my system was powered off for more than 8 hours or so the BIOS would not POST.

    I could hear it cycling through some sort of sequence but there were no beeps or anything sane.
    Bought a new power supply but no change, then after seeing posts in these forums I took computer
    back to the dealer and asked them to try different RAM (CORSAIR XMS3 1600 MHz), been working
    perfectly for two days now.

    This may not be your problem but worth a try.

    My system:
    Motherboard: Gigabyte P55A-UD3R
    CPU: Intel Core i7 CPU 860 @ 2.79GHz
    RAM: CORSAIR XMS3 1600 MHz
    Disk: 500GB Western Digital
    GPU: GeForce GTS 250 1024MB
    Monitor: ACI ASUS VH232H

    no you see this is a brand new pc i build and it never so the light of windows. it never booted. when i power up its just blank. no post screen, no beeps. nada. even after i remove some hardware thers no sound from the onboard speaker...
  14. Hello John,

    Try this simple check, do what's called a "naked boot", using just your video card hooked to your monitor, and of coarse your atx, no cards, nothing else, no drives, HDD, cd's, snd cards, network, nothing, if it'll post into bios, then add on one card or any other component at a time, this will tell you what's causing your board not to go into post, is this does not work, MB is at fault.
  15. john2vn said:
    no you see this is a brand new pc i build and it never so the light of windows. it never booted. when i power up its just blank. no post screen, no beeps. nada. even after i remove some hardware thers no sound from the onboard speaker...


    When you say 'onboard speaker,' I trust you are referring to the motherboards speaker? You should one of these.
    http://www.clearpc.ca/catalog/images/speaker.JPG
  16. john2vn said:
    no you see this is a brand new pc i build and it never so the light of windows. it never booted. when i power up its just blank. no post screen, no beeps. nada. even after i remove some hardware thers no sound from the onboard speaker...


    Yeah my PC is a new build also. The problem with the GSKILL RAM caused no post when cold booting, the
    fans turned on but the screen was totally black no sound from the speaker, no mouse, and no keyboard control.
    If you try junior48's idea and have no luck borrow some different brand RAM and try them.
    Graphics cards can also cause post problems.
    Good luck, I hope you can nail the problem and let us know if you do.
    Cheers.
  17. aford10 said:
    When you say 'onboard speaker,' I trust you are referring to the motherboards speaker? You should one of these.
    http://www.clearpc.ca/catalog/images/speaker.JPG


    Jip. one just like that...the mobo didnt come with one so i had to fit my own one... im now waiting for the supllier to send the board back then i'll try all of your advice. thanks guy...

    PS i live in south africa. just to let you know we are not that tecno disadvantached :non:
  18. john2vn said:
    Jip. one just like that...the mobo didnt come with one so i had to fit my own one... im now waiting for the supllier to send the board back then i'll try all of your advice. thanks guy...

    PS i live in south africa. just to let you know we are not that tecno disadvantached :non:


    Alright. Let us know how it turns out.
  19. junior48 said:
    Hello John,

    Try this simple check, do what's called a "naked boot", using just your video card hooked to your monitor, and of coarse your atx, no cards, nothing else, no drives, HDD, cd's, snd cards, network, nothing, if it'll post into bios, then add on one card or any other component at a time, this will tell you what's causing your board not to go into post, is this does not work, MB is at fault.


    hi. got the mobo back. still no boot. ran the naked boot. first without video card, hdd, dvdd and any pci devices...nothing
    then with no ram at all...silence
    then even with no cpu...still silence
    !!!!!! :cry:
  20. Double check the PSU connections. It sounds like a bad PSU.
  21. got a brand new psu today:cry:... everything is connected properley
  22. What kind is the new PSU?

    Are you still using the original motherboard that you were told wasn't faulty?
  23. The PSU is a gigabyte 585W...
    Im still using the motherboard.
    ASUS M4A78...
  24. I'd try a PSU with more amps on the 12v rail. That PSU has 16amps on 12v1 and 18 on 12v2.
  25. Yes dudes check here na. on the ZIF socket it says AM2 but the boards specs says AM3 compatable??
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