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Fans turn on but no signal?

post #1 of 7
Thread Starter 
I need some help. My build was running fine but I decided to move my rig into a new case. Once I got it into the new case and I turned it on. I got the no signal no matter what port I tried. I tried the video card's HDMI and DVI. I also tried the motherboards DVI and VGA. Nothing will show up on screen. I took everything out of the new case and reseated everything. Tried to reboot and it still has no signal. The fan for the case and gpu turns on. What could be the problem? I touch the CPU and its very hot to touch so i think the CPU still works
Edited by ivoryg37 - 2/16/13 at 8:46pm
post #2 of 7
1. Check all connections

2. Clear CMOS

3. Try single sticks of RAM/make sure RAM is configured correctly

4. Remove all unnecessary devices (PCIe cards, hard drives, etc)

5. Call the motherboard manufacturer and ask for help

If you have any kind of LED post card/header tell us what numbers it says.
post your parts list
You could try reseating the CPU, but be extremely careful
post #3 of 7
This may sound crazy, but since you mentioned a case swap . . . the no-video/post issue you've encountered can be caused by a mis-aligned case mount that's touching/shorting out your motherboard. Check that all mounts align with the proper motherboard screw holes and none are touching the board itself. I would suggest using nylon mounts instead of brass, and non-conductive fiber washers when screwing down the board. Also confirm that nothing metallic is touching the motherboard, for improper alignment along the back and backplate area. Check for loose screws lying on the motherboard as well, anything that can be causing the board to short out.

Another possible cause is a bent socket/CPU pin.

You need to hook up a motherboard speaker so you can hear any diagnostic beeps from BIOS during post, if any.

Check the motherboard docs for other diagnostics, like LED lights/blinking, post codes, etc.
Good luck.
post #4 of 7
I don't think it's the cpu, memory, or graphics, as SonicAgamemnon said I think it's something with the motherboard mounting in the case. remove everything and place it on cardboard on a table and see if it boots up.
Old X58
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 970 6 core ASUS Sabertooth X58 MSI GTX 1070 Gaming X GSkill 24 gigs 
Hard DriveHard DriveHard DriveCooling
Crucial MX100 256 gig Crucial M500 120gig WD VelociRaptor 1TB Noctua 
OSMonitorMonitorKeyboard
Windows 7 Pro 64bit LG 29inch widescreen DP LG 29inch widescreen DP Corsair K65 
PowerCaseMouseAudio
EVGA SuperNova G2 1000w Corsair C70 Corsair M65 Sound Blaster Z 
Other
Custom sleeved psu cables 
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Old X58
(17 items)
 
  
CPUMotherboardGraphicsRAM
i7 970 6 core ASUS Sabertooth X58 MSI GTX 1070 Gaming X GSkill 24 gigs 
Hard DriveHard DriveHard DriveCooling
Crucial MX100 256 gig Crucial M500 120gig WD VelociRaptor 1TB Noctua 
OSMonitorMonitorKeyboard
Windows 7 Pro 64bit LG 29inch widescreen DP LG 29inch widescreen DP Corsair K65 
PowerCaseMouseAudio
EVGA SuperNova G2 1000w Corsair C70 Corsair M65 Sound Blaster Z 
Other
Custom sleeved psu cables 
  hide details  
Reply
post #5 of 7
Quote:
Originally Posted by SonicAgamemnon View Post

This may sound crazy, but since you mentioned a case swap . . . the no-video/post issue you've encountered can be caused by a mis-aligned case mount that's touching/shorting out your motherboard. Check that all mounts align with the proper motherboard screw holes and none are touching the board itself. I would suggest using nylon mounts instead of brass, and non-conductive fiber washers when screwing down the board. Also confirm that nothing metallic is touching the motherboard, for improper alignment along the back and backplate area. Check for loose screws lying on the motherboard as well, anything that can be causing the board to short out.

Another possible cause is a bent socket/CPU pin.

You need to hook up a motherboard speaker so you can hear any diagnostic beeps from BIOS during post, if any.

Check the motherboard docs for other diagnostics, like LED lights/blinking, post codes, etc.
Good luck.
If you have a short circuit/power supply/overheating issue, it tends to just turn on then shut down.

Bent pins or something wrong with the motherboard are both possibilities, but it's usually something like the RAM not being seated properly or the CMOS needing to be cleared, when you get a situation like this.
post #6 of 7
Thread Starter 
I believe the CPU still works because I touched it after taking off the heatsink and ended up with a blister. I put the ram into another computer and it worked. I took all the parts out and put it in another board and it boot up fine so it came down to the Motherboard I believe.

I doubt it could have been any of the other stuff since I just moved the entired rig to the new case without unplugging anything besides the motherboard itself. Hopefully its just the motherboard
Edited by ivoryg37 - 2/17/13 at 4:06pm
post #7 of 7
It's almost never the CPU. The component that is most likely faulty is the motherboard.
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