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PC starts, no display, no beep

Tags:
  • Cable
  • Systems
  • Displays
Last response: in Systems
July 5, 2014 6:17:58 PM

I installed a new gtx 750 the other day and I must have must a cable up or something because at first the monitor wouldn't get signal but now when I play games sometimes my computer will shut off but immediately come back on but my display wont show up nor will i hear the beep. Im not sure if this fixes it but i usually unplug all psu connectors from my system and plug them back in. I don't know if it's my psu cables inside my pc, my power cable from the psu to the wall, my card, or something else. Thanks

Specs:
Cooler master GX 650w
Geforce gtx 750
Gigabyte ga-78lmt s2
AMD FX 4300

More about : starts display beep

July 5, 2014 6:55:53 PM

that can be psu but not for sure. Just to check some points before we declare anything faulty.
1. Does the same thing happen when your are not using your graphics card just using onboard vga?
2. Try running your pc with just 1 ram stick, swap it if it still happens.
3. Touch the Northbridge and southbridge of your board and make sure they aren't heating up much.
4. Check your connections on motherboard(make sure they are tight) and for once run your start your motherboard outside cabinet.
5. Hopefully, it would be reassuring idea if you reinstall your motherboard's latest drivers.
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July 5, 2014 7:04:46 PM

brarboy said:
that can be psu but not for sure. Just to check some points before we declare anything faulty.
1. Does the same thing happen when your are not using your graphics card just using onboard vga?
2. Try running your pc with just 1 ram stick, swap it if it still happens.
3. Touch the Northbridge and southbridge of your board and make sure they aren't heating up much.
4. Check your connections on motherboard(make sure they are tight) and for once run your start your motherboard outside cabinet.
5. Hopefully, it would be reassuring idea if you reinstall your motherboard's latest drivers.


Not my graphics card cuz I did try the on board vga when this problem first started and still no signal.
I'll try the swap ram and check motherboard heating once I have time.
How do I start my motherboard from outside?
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July 5, 2014 7:07:19 PM

the place you connect your power connecters are the 2 pins on motherboard, just short those 2 pins with screw driver.
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July 5, 2014 8:12:12 PM

brarboy said:
that can be psu but not for sure. Just to check some points before we declare anything faulty.
1. Does the same thing happen when your are not using your graphics card just using onboard vga?
2. Try running your pc with just 1 ram stick, swap it if it still happens.
3. Touch the Northbridge and southbridge of your board and make sure they aren't heating up much.
4. Check your connections on motherboard(make sure they are tight) and for once run your start your motherboard outside cabinet.
5. Hopefully, it would be reassuring idea if you reinstall your motherboard's latest drivers.


I think I found the problem...
I was seeing if it was the RAM and when I took one out I decided to just push the 20+4 connecter in a littler to make sure it wasn't loose. It just so happened the be loose and my computer booted normal. I put both ram in and it didn't boot then pushed the connector in again and it started. I took it out to see if anything was abnormal and I noticed a hole with no wire, I Google images of 20 pin connectors and most of them were missing the wire as well. However, underneath the empty hole the wire is halfway pushed in so u can barely see the metal part that. I think that may be a problem.
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July 5, 2014 8:43:59 PM

thewizard174 said:
I think I found the problem...
I was seeing if it was the RAM and when I took one out I decided to just push the 20+4 connecter in a littler to make sure it wasn't loose. It just so happened the be loose and my computer booted normal. I put both ram in and it didn't boot then pushed the connector in again and it started. I took it out to see if anything was abnormal and I noticed a hole with no wire, I Google images of 20 pin connectors and most of them were missing the wire as well. However, underneath the empty hole the wire is halfway pushed in so u can barely see the metal part that. I think that may be a problem.


Just push the brass wire terminal further in to level it into the connector... and if it retracts every time you press the connector in, push the brass terminal after the connector is fully seated on the motherboard. A small screwdriver, a wire or extended jumbo or butterfly paperclip should do the trick.

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Best solution

July 5, 2014 9:11:17 PM

thewizard174 said:

I think I found the problem...
I was seeing if it was the RAM and when I took one out I decided to just push the 20+4 connecter in a littler to make sure it wasn't loose. It just so happened the be loose and my computer booted normal. I put both ram in and it didn't boot then pushed the connector in again and it started. I took it out to see if anything was abnormal and I noticed a hole with no wire, I Google images of 20 pin connectors and most of them were missing the wire as well. However, underneath the empty hole the wire is halfway pushed in so u can barely see the metal part that. I think that may be a problem.


The missing wire of a connector was used before to provide -5 V power to the motherboard. Newer motherboards virtually never require -5 volts but many older motherboards do(like years back). Most newer power supplies don't provide -5 volts in which case the white wire is missing. If loose connection was the the problem you had been facing, then glad you figured out which one. Good luck and keep us posted if you finally got rid of the problem.
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January 18, 2015 8:49:27 AM

brarboy said:
thewizard174 said:

I think I found the problem...
I was seeing if it was the RAM and when I took one out I decided to just push the 20+4 connecter in a littler to make sure it wasn't loose. It just so happened the be loose and my computer booted normal. I put both ram in and it didn't boot then pushed the connector in again and it started. I took it out to see if anything was abnormal and I noticed a hole with no wire, I Google images of 20 pin connectors and most of them were missing the wire as well. However, underneath the empty hole the wire is halfway pushed in so u can barely see the metal part that. I think that may be a problem.


The missing wire of a connector was used before to provide -5 V power to the motherboard. Newer motherboards virtually never require -5 volts but many older motherboards do(like years back). Most newer power supplies don't provide -5 volts in which case the white wire is missing. If loose connection was the the problem you had been facing, then glad you figured out which one. Good luck and keep us posted if you finally got rid of the problem.


Hey, I'm a little late to the party, but I have been having the same issue. I replaced the power supply on a system with a Pentium 4 3.06GHz processor in a discontinued Intel board (DG31PR). I have it set up breadboard style right now. With only the processor in place, no RAM, I get the expected 3 long beeps for a memory error. When I add the RAM (tested with new RAM as well, all DDR2 800 which is supposed to be compatible). I get no beeps, and still no display. If I remember correctly the on board video never worked, so I have two known good graphics cards (an ASUS EN8400GS and an MSI N9400GT, both tested in other working systems) and still cannot get a display with either of them. After finding this thread, I looked at my power supply and noticed that it is in fact missing the -5V wire. The old PSU was dead so I recycled it and didn't think to check whether this wire was present, but given that this board is an old discontinued model, I think the missing -5V seems like a likely solution. So my question is, do you know of any locations where I can purchase a power supply with this wire?
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January 22, 2015 11:35:45 PM

YakAttack said:

Hey, I'm a little late to the party, but I have been having the same issue. I replaced the power supply on a system with a Pentium 4 3.06GHz processor in a discontinued Intel board (DG31PR). I have it set up breadboard style right now. With only the processor in place, no RAM, I get the expected 3 long beeps for a memory error. When I add the RAM (tested with new RAM as well, all DDR2 800 which is supposed to be compatible). I get no beeps, and still no display. If I remember correctly the on board video never worked, so I have two known good graphics cards (an ASUS EN8400GS and an MSI N9400GT, both tested in other working systems) and still cannot get a display with either of them. After finding this thread, I looked at my power supply and noticed that it is in fact missing the -5V wire. The old PSU was dead so I recycled it and didn't think to check whether this wire was present, but given that this board is an old discontinued model, I think the missing -5V seems like a likely solution. So my question is, do you know of any locations where I can purchase a power supply with this wire?


just start a new thread and explain the things you have already done so far. There may be any other solution to your problem. You may get better responses which might help you solve your unsolved problem :) 
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