graphic card problem.

[kryton]

hi

just wondering if anybody could shed some light on this please.

 

this morning i fitted a second hard drive to my pc.

i started the pc up and got nothing, the CPU fan was running at its highest speed

 

i finaly found that if i take my graphics card out and use the onboard graphic socket the pc boots as normal and everything seems fine.

 

if i plug the card back in (sapphire HD 4870) the CPU fan goes nuts again, i can still boot the pc using onboard graphics,but i cant see the graphics card in device manager and the CPU fan constantly runs at what seems it's highest rpm.

strange thing is where i fitted the new hard drive was nowhere near the GFX card so i cant see why it would harm it.

 

the only thing i can think of is an overload on the power supply? its only a 450 watt PSU but why would this make the CPU fan speed increase when the card is inserted?.

 

any ideas?

 

thanks

[maynardvdm]

Hi

 

Does the PC boot fine if you take out the new HDD and the graphics card in?

[kryton]

Hi

 

Does the PC boot fine if you take out the new HDD and the graphics card in?

 

thanks for the reply mate.

 

i took the new HDD straight away,its not in now.

The pc boots and works fine untill i put the graphic card back in. (without the HDD)

it still boots then but i get no output from the card, i have to use onboard graphic's

and with the card fitted the CPU fan runs at a very noticable fast rate., about 3 times faster than normal.

[maynardvdm]

Is it possible to test the graphics card in another PC?

[maynardvdm]

I also found this:

 

ATI Radeon™ HD 4870 System Requirements

 

• 500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended (600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in dual mode)
  

 

ATI Radeon™ HD 4800 Series - System Requirements

[Dalo Harkin]

If the fan is running at what ypu say 'higher then it was previous' then that is controlled by the BIOS.

As you have onboard graphics as well as an add in card, you would need to go into the BIOS and disable the onboard for the add in card to work properly and while you are there set the CPU fan

 

If you are unsure how to do any of this then let us know the MOBO manufacturer and we can help further

[kryton]

Thanks again for the help guys.

 

the motherboard is a Asrock G31M-GS.

Now you mention it the BIOS clock settings did reset itself to feb 09 and set the clock at midnight.

i did have a look around the BIOS settings but everything was set to auto.

i loaded default settings but still the same.

 

i didnt see any setting for onboard gfx unless i missed it.

 

and yes mate....the CPU fan stays at a constant high speed untill the card is removed, then everything appears to go back to normal.

[kryton]

i tried to edit my last post but couldnt :)

 

ive just had another look around the BIOS, the primary graphic adator is set to PCI express, not onboard.

But onboard graphics are still working and i get the same high speed CPU fan when the card is inserted.

also with the card fitted and using onboard graphics i cant see the card in device manager

[Plastic Nev]

Hi Kryton,

Although not good news, I am beginning to suspect that coincidental perhaps, but it looks like the graphics card has died. Is there any chance of trying the card in another machine to prove it one way or the other?

Nev.

[kryton]

Hi nev, thanks mate

yeah im starting to think the same thing :(

i will see if i can check it on my mates PC to rule it out.

 

but would this have any effect to why the CPU fan speed increases so much when the card is fitted?

thats the only thing i dont understand.

[Plastic Nev]

Only a shot in the dark, but if the card is faulty, it could be sending confusing messages to the rest of the system regarding temperatures, but that is only a guess. I am not that well up yet on graphics cards, so will wait for others who do know more.