Is my graphic card gone? (Sapphire Radeon HD 5570)

[pajsr]

Hello. This is first thread here so I am sorry, if I sound dumb. I can normally fix these sort of problems myself, but this one is just beyond me.

To begin, I own a three year old PC with:
(OS) WIN 7 Home Premium 64bit
(CPU) Intel core i3 540 @ 3.07GHz
(Motherboard) ASRock H55M-LE (CPUSocket)
(GPU) Sapphire Radeon 5570 hd 1gb ddr3
(RAM) Kingston 4,00 gb DDR3 (two sticks)
Two SATA hard drives and an LG lcd monitor

Trouble started after a power outage and my monitor showed a blank screen after booting.
Had this sort of thing happen before, always fixed it with removing a memory stick and both HDs. Only this time that doesn't seem to be the cure.

Monitor shows a blank screen, like it's hibernating. No "no signal" message.
The fan on the card is spinning and I can hear it, although I can't tell the difference if it sounds bad, because the card has always been sort of loud.

Switched the monitor to the on board VGA. Booted to windows.
Sapphire Radeon 5570 hd now not detected exist any more.
Removed Catalyst using driver sweeper.
Reinstalled it again, hoping it might help. It didn't.

BIOS has VGA settings set to PCI-express. Tried enabling Onboard and then rebooting and set to PCI-E again, but not working.

This are the PC specs as of now:

I'm thinking of doing a repair install, but I'm really sceptical as to how that would help the graphic card to work as it doesn't seem to be responding.

I have tried removing both HDs but it doesn't work.

Do I need to buy a new one?

PS: Oh yeah I made two threads by mistake. Sorry.

 

[Mark Phelps]

The fan spinning on the video card only confirms that it's getting power. The video chipset could still be blown or damaged.

If you haven't tried physically removing the card, booting without it, shutting down, reinserting the card, and booting with it -- try that. It just might work.

But, from what you said, my guess is that the video chipset is damaged.

 

[pajsr]

Did that. Didn't work. Same as before. Tried a different monitor, same thing.

So it's done then? :-(
Is there anything else I could try? I don't want to throw it in the trash just yet.

I'm thinking tomorrow I'll put in it into another comp.

 

[Solarstarshines]

If you have onboard graphics it will not disable with the card installed and you might have to go and make changes in the bios for it to run sometimes it doesn't kick it because it might be on manual settings

If the power outage just knocked down the computer and it turned on then I doubt the card was affected

it would have done damage to the whole system not just that card unless there is a blown capacitor or burn marks

i would try it in another computer first /also like the above advice check your bios on how it is all set up you can also try taking out the card going to bios and choosing default settings either with the card or with out and btw if you are able to see the boot sequence and post screen the card still works