Problem with new GPU

[vladiator]

Hi all

Until today I used geforce 9800GT. Today I purchased AMD HD7870 gpu. I had some other problems with PC which the store have been dealing with so they also installed the card for me.

When I got home, I realised that my card was not using the full 24 inch monitor area but was leaving about an inch on every side dark. I updated all drivers from AMD website, but it did not help. None of the windows 8 resolution options or AMI Catalyst Centre options were helping either.

I read somewhere online that my old nvidea drivers maybe interfering and should be deleted. Which I did using add/remove programs.

Now, on restart, the monitor start flickering from black to grey once it get passed the mobo options screen. I cannot see anything.

Any suggestions? I must have affected some radeon drivers when deleting nvidea drivers.is it possible to reinstall them from BIOS? Also my cpu also has internal graphics - how can I use it to get to windows 8?

 

[Carfax83]

Any suggestions? I must have affected some radeon drivers when deleting nvidea drivers.is it possible to reinstall them from BIOS? Also my cpu also has internal graphics - how can I use it to get to windows 8?

No you can't reinstall from BIOS. You'll have to boot up in to Windows to do that..

You should be able to enable your IGP from the BIOS.. That should allow you to boot back into Windows and uninstall everything, including the AMD drivers. Make sure all folders are deleted, and if I were you, I'd run one of those programs like Driver Sweeper to make sure all the old registry entries are also deleted.

 

[vladiator]

Hmm, the not being able to start PC problem is solved - run Win 8 through integrated graphics and re-installed the drivers. but the screen still has a 1-inch unused screen area on the edges. Any suggestions?

 

[Cerb]

What is the "screen"? As in, a make and a model.

What resolution should it be?

What resolution is it set to?

Have you verified that overscan and underscan are off? If your monitor can also function as a TV, you need to verify this in its OSD, too.

 

[vladiator]

What is the "screen"? As in, a make and a model.

What resolution should it be?

What resolution is it set to?

Have you verified that overscan and underscan are off? If your monitor can also function as a TV, you need to verify this in its OSD, too.

Hi Cerb

* BenQ G2420HD

* it is set to 1080p. This is what I used with my 9800GT as well. There is no option of going higher.

Sorry, could you calrify you last part the over-/underscan, etc? What do I need to do?

 

[Cerb]

Sorry, could you calrify you last part the over-/underscan, etc? What do I need to do?

Somewhere in the Catalyst Control Center, there should be scaling options, which will include under-scanning. Usually, it only affects the HDMI monitor input, and using VGA or DVI would "fix" it, along with turning it off.

It's a recurring issue, due to AMD deciding to underscan, v. you not seeing the taskbar, when a monitor falsely claims it doesn't overscan (rare, today, but was common).

 

[vladiator]

Somewhere in the Catalyst Control Center, there should be scaling options, which will include under-scanning. Usually, it only affects the HDMI monitor input, and using VGA or DVI would "fix" it, along with turning it off.

It's a recurring issue, due to AMD deciding to underscan, v. you not seeing the taskbar, when a monitor falsely claims it doesn't overscan (rare, today, but was common).

Thanks Cerb - having searched a bit more in Catalyst, I found an option to resize the screen. It is all sorted. Cheers.

 

[Will Robinson]

Nice one Cerb :thumbsup:

 

[Cerb]

Nice one Cerb :thumbsup:

I sure didn't feel that way the first time I across it, before I even realized that the standards bodies were so divorced from the technology they were making standards for that they hadn't gone the sane, common sense, route of getting rid of the very concepts of under/over-scanning when they went to digital communication standards. I would have liked to have been banging my head against the wall. So, I kind of watch out for that sort of thing, now, since it's less expected than the Spanish Inquisition .