New PC not booting!

Discussion in 'General Hardware' started by Chris_, Apr 8, 2006.

  1. Chris_

    Chris_ Excalibur

    Likes Received:
    1
    Trophy Points:
    0
    Hi,

    A while back now (September '05 - yeah long time :x: ) I first started here for building my 'new' PC. And for the last week I have the PC fully assembled with all the components. But, I am having a problem..
    When I try turning the PC on, my monitor displays "No Signal" from the graphics card (Gainward 7800GT 512MB), which is seated in PCIEX16_1 (Blue socket) on my Asus A8N-SLi Premium motherboard. I have checked and re-checked several times that everything is seated/connected properly.

    Here are the specs:
    Motherboard: Asus A8N-SLi Premium [Rev. 1.02]
    Processor (CPU): AMD Athlon 64 3500+ [OEM]
    CPU Cooler: Artic Cooling Silencer 64 Ultra TC
    Power Supply (PSU): Antec TruePower 480W
    Memory (RAM): 2x512MB (Identical) Corsair XMS3200 CL 2.00 [Seated as Dual Channel]
    Graphics Card (GPU): Gainward 7800GT 512MB
    Optical Drive: LG DVD-RW Dual Layer
    Hard Disk: Western Digital 160GB SATA

    I think my problem is around the voltage.. My motherboard has one 24-socket and one 4-socket ATX power connectors - my PSU has one 20-pin connector and one 4-pin connector. Would this be a problem? and would the solution to buy a 20 > 24-pin PSU Adapter?

    Im pretty frustrated by this :( So If you could help, I would be very pleased! :p

    Oh, When I tested my system with just barebones I got a beep code, this code was one loooooong beep followed by two short beeps. This was indicating a GPU problem. Strangely, I don't get this beep code anymore :x:
     
  2. donkey42

    donkey42 plank

    Likes Received:
    9
    Trophy Points:
    38
    look on your VGA card for the 4 pin adaptor
     
  3. Chris_

    Chris_ Excalibur

    Likes Received:
    1
    Trophy Points:
    0
    Hi,
    Is a VGA card another way of saying Video card? I can't find the PSU Adapter in the PSU, motherboard, or graphics card packaging.. if thats what you mean?
     
  4. donkey42

    donkey42 plank

    Likes Received:
    9
    Trophy Points:
    38
    i'll just look at some websites (your motherboard manufacturer) and yes by saying VGA card i did mean graphics card
     
  5. donkey42

    donkey42 plank

    Likes Received:
    9
    Trophy Points:
    38
    right, your PSU has both 20 and 24 pin connectors find then both then use the one that fits your M/B and just move the other one so its out of the way and plug the 4 pin plug into the 4 pin socket near the mouse / keyboard connector
     
  6. Chris_

    Chris_ Excalibur

    Likes Received:
    1
    Trophy Points:
    0
    Strange, My PSU has one 20-Pin connector and the 4-pin connector ONLY. But, I have found that I can use the 4-pin and 20-pin together to perfectly fit as the 24-pin. My motherboard manual says that If I don't use the 4-pin in the 4-pin socket the PC won't boot (which it isn't doing anyway).
     
  7. donkey42

    donkey42 plank

    Likes Received:
    9
    Trophy Points:
    38
  8. Chris_

    Chris_ Excalibur

    Likes Received:
    1
    Trophy Points:
    0
  9. donkey42

    donkey42 plank

    Likes Received:
    9
    Trophy Points:
    38
    i don't know, your right it only has a 20 pin connector, sorry, hopefully BIG B will be abel to help you, cos he's THE MAN when it comes to PSU's
     
  10. Chris_

    Chris_ Excalibur

    Likes Received:
    1
    Trophy Points:
    0
    Ok mate, thanks for all your help! :D
     
  11. Karanislove

    Karanislove It's D Grav80 Of Luv

    Likes Received:
    0
    Trophy Points:
    36
    I searched on the net and come out with this.......this solution looks bit weared but still I thought it might help you in someway.....

    First, you can try an easy approach to troubleshoot this...


    Power up everything ( monitor, and the computer, with it's case
    removed..) and wait for the video to stabilze completely.


    OK, now first things first, I do this for a living so when I stress
    the idea of static damage to the computer, and what to do to avoid it,
    I mean it ! I'd hate to give advice that kills someone's system.


    First, touch the bare metal skeleton of the opened computer with both
    hands, to get rid of static. Next, while watching the monitor display,
    GENTLY tap on your video card once or twice and see if anything
    happens to the display.( If video is affected, see NOTE 1) If nothing
    happens to the display, touch the skeleton again, (static) and tap
    EVER SO GENTLY once or twice on the case of the cooling fan or the
    heatsink of your CPU, again, while watching the display. (If video is
    affected, see NOTE 2) If nothing happens again, that kind of confirms
    the connections are OK, hence, most likely, bad mobo.. You can
    contiune to do the "touch the skeleton, tap on something" to your
    other installed cards...any one of them acting goofy could easily
    affect video performance by causing hissy fits on the data and address
    lines of the CPU. ( and if it's not a critical card, you can always
    pull it and power up without it and see if things are OK.)

    NOTE 1: Either a) the socket on the mobo has a physical defect causing
    short or open circuits, or b) there is a bad solder joint on the
    socket ( the point where the legs of the socket are soldered to the
    circuit board)


    Case A is very difficult to determine without a microscope, so I guess
    Case A= new mobo.


    Case B can be checked, although not nearly as easily without a
    microscope. You will need access to the back side of your mobo, if you
    have a fancy case you can probably get it quite easily. Otherwise you
    will need to remove it from the case.( Touching the skeleton or
    something grounded, every now and then. ) You want to look, using a
    very bright light, at the little legs of the video card socket where
    they come through the circuit board. Then, move the video card up and
    down, or left and right, depending on how it's oriented, to cause a
    little stress on the socket. If you see any of the socket legs move,
    you have a bad connection, Either try to resolder it, or give up at
    this point if you don't know how.
    ( sorry..)


    NOTE 2: See CASE A in NOTE 1
    __________________________________________________________


    If none of this tapping method works, it really seems to me to be a
    bad mobo....the symptoms you describe, and how they actually change in
    some ways, seems to act like thousands of circuit boards I have worked
    on. That is how chips going bad, or connections going bad, tend to
    act.
    I guess it looks like your best hope is a bad, but re-solderable
    connection on the video card socket.

    Sorry I was so long winded and not-to-hopeful sounding, but look on
    the bright side, mobo's can be bought pretty cheap, and if you got a
    new one at least you'd know all your other hardware seems OK !

    Source: [link=http://groups.google.com/group/comp.hardware/browse_thread/thread/55bedaa88e32f3db/5a08b58912767371?lnk=st&q=monitor+displays+No+Signal+from+the+graphics+card&rnum=1&hl=en#5a08b58912767371] Google Groups [/link]
     

Share This Page