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no BIOS after CROSSFIRE

post #1 of 4
Thread Starter 
hi guys. i just added one more 5870 vapor-x to do crossfire.
sapphire 1gb 5870(normal version) + sapphire 1gb 5870 vapor-x

but, after installing physically, i pushed power button. but there is no bios screen.

this my system:
i7 920 at 4ghz(overclocked)
asus p6tse
thermaltake toughpower 750w cable management
corsair 6 gb 1600mhz

i am now for crossfire. please help me
thanks in advance.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 920 D0 Rev ASUS P6T SE Sapphire HD5870 1GB Corsair XMS3 (3*2) 6GB 1600MHz DDR3 Triple Kit 
Hard DriveOptical DriveOSMonitor
Seagate 1TB 7200RPM SATA-II 32MB NCQ LG 22X SATA DVD LAYER Windows 7 Professional 64-Bit Samsung SyncMaster 2494HS 
KeyboardPowerCaseMouse
Logitech G15 V2 Sirtec High Power Absolute 1000W Cooler Master HAF 922 MidT Logitech MX518 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 920 D0 Rev ASUS P6T SE Sapphire HD5870 1GB Corsair XMS3 (3*2) 6GB 1600MHz DDR3 Triple Kit 
Hard DriveOptical DriveOSMonitor
Seagate 1TB 7200RPM SATA-II 32MB NCQ LG 22X SATA DVD LAYER Windows 7 Professional 64-Bit Samsung SyncMaster 2494HS 
KeyboardPowerCaseMouse
Logitech G15 V2 Sirtec High Power Absolute 1000W Cooler Master HAF 922 MidT Logitech MX518 
  hide details  
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post #2 of 4
Disclaimer* I bleed green so my troubleshooting will only pertain to A+ stuff and what I know of SLi and what I make assumptions of CF

Have you tried re-seating the new card (may have a short)

By no BIOS I assume you mean the computer does not post at all. it turns on, but no POST beep? just a black screen?

If so:

Remove the new card. Try to boot up.

Same issue? If not then I would first update to the latest BIOS revision.

Replace Card. Try it again.

Swap the new card with the old cards slot. See if it works -_-
Edited by NitroNarcosis - 3/17/11 at 10:02am
post #3 of 4
Thread Starter 
i did removed the second card , i did removed the cpu overclock(by clearing CMOS) , i couldnt removed the amd drivers/profiles because BIOS does not post, couldnt boot into safe mode and couldnt run driver sweeper couldnt shut down because BIOS does not post , i did reseted cmos , i did installed second card and it didnt work.

crossfire connector??( i could understand. maybe you meant crossfire bridge) crossfire bridge was intalled ( i have only one bridge)

removed the old card and run the new card by it self. didnt work

i plugged off psu and my CPU and installed back it didnt work.

i had done a overclock when i am doing crossfire. maybe after crossfire with overclock my mainboard broken down.

problem seems on mainboard or power supply unit. what do you recommend me? what should i do in this situation?
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 920 D0 Rev ASUS P6T SE Sapphire HD5870 1GB Corsair XMS3 (3*2) 6GB 1600MHz DDR3 Triple Kit 
Hard DriveOptical DriveOSMonitor
Seagate 1TB 7200RPM SATA-II 32MB NCQ LG 22X SATA DVD LAYER Windows 7 Professional 64-Bit Samsung SyncMaster 2494HS 
KeyboardPowerCaseMouse
Logitech G15 V2 Sirtec High Power Absolute 1000W Cooler Master HAF 922 MidT Logitech MX518 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 920 D0 Rev ASUS P6T SE Sapphire HD5870 1GB Corsair XMS3 (3*2) 6GB 1600MHz DDR3 Triple Kit 
Hard DriveOptical DriveOSMonitor
Seagate 1TB 7200RPM SATA-II 32MB NCQ LG 22X SATA DVD LAYER Windows 7 Professional 64-Bit Samsung SyncMaster 2494HS 
KeyboardPowerCaseMouse
Logitech G15 V2 Sirtec High Power Absolute 1000W Cooler Master HAF 922 MidT Logitech MX518 
  hide details  
Reply
post #4 of 4
Quote:
Originally Posted by kopekbaligi View Post
crossfire connector??( i could understand. maybe you meant crossfire bridge) crossfire bridge was intalled ( i have only one bridge)
I never mentioned the CF bridge or connector

Quote:
Originally Posted by kopekbaligi View Post
removed the old card and run the new card by it self. didnt work
Did you remove the new card and just try the old one?

Quote:
Originally Posted by kopekbaligi View Post
i plugged off psu and my CPU and installed back it didnt work.
So you unplugged your Power Supply...you removed/reseated your CPU from its socket? (Sorry some of the wording is a bit hard to understand and I am trying to clarify)

Quote:
Originally Posted by kopekbaligi View Post
i had done a overclock when i am doing crossfire. maybe after crossfire with overclock my mainboard broken down.
So you have booted into windows while having both cards connected?
Otherwise how did you do overclock on these cards in crossfire?

Edit: You were overclocking the CPU?
-Was it a stable overclock?
-How long were you running like this?
-Any temp issues?

Quote:
Originally Posted by kopekbaligi View Post
problem seems on mainboard or power supply unit. what do you recommend me? what should i do in this situation?
I am still trying to understand what kind of output you get when you fire the sucker up.

I apologize if I seem confused...let me explain.

You stated that you cleared the CMOS. well you did this by either unplugging the PSU while removing the battery from the mobo or by using the cmos jumper.

Either way...considering the symptoms you have described with no BIOS upon startup...How would you know it was actually cleared?

What steps did you take to clear CMOS?

How many other devices do you have connected to the main board?

When troubleshooting Eliminate any possible outside variables when trying to diagnose a problem ( I have learned this through experience, I remember not listening to this advice and it cost me days of BS) Simply put...Remove all non essentials from the board

Sound cards (if you havet hem)
any extra PCI or PCI-e devices
Optical drives
Non OS drives

Just keep the basics and then see if that turns on
Run with only the original video card or on-board if it has it (Honestly I haven't looked at your sig or can't remember what your gear is at the moment)

Run with only one stick of memory (verify its a good stick of memory with another machine if you can, otherwise just try 1 then try another.)

Good luck and let us know what happens

I know that this takes time, but it helps to keep things documented and take notes as to what your doing, this prevents double work and helps with process of elimination. We are here for you
Edited by NitroNarcosis - 3/18/11 at 5:56am
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