Official AMD drivers for crossfired 6870s are fail .. ??

[savage1987]

Even the most recent CCC hotfix 11.5b will not boot to desktop in this system.

I've been having some issues with graphics drivers since building this machine.

Here's what it was doing:
Startup issue - Overclock.net - Overclocking.net

Last night I tried cleaning the whole lot out with Driver Sweeper in safe mode after uninstalling the CCC, then freshly installing CCC 11.5b and it manifested the same problem outlined above.


As a result of a few splashed comments in threads on overclock.net forum, somebody has recommended I give 10.12 a try as that was the last version to work properly for him.

I'm about to try CCC 10.12 now and will post up how it goes, but if anyone has any ideas or has gone through something similar I'd love to hear about it.


Thanks
Sam














Background system info:

Crosshair Formula IV board
2x MSI 1GB 6870s
Phenom II x4 955BE @ 3.6GHz (clocked back down from 4.0 to reduce possible causes)
Corsair HX-650 PSU (AX1200 replacement ready)
1GB Caviar Black OS/apps HDD
2GB Caviar Green storage HDD
4GB G-Skill Ripjaws (F3-16000CL9-2GBRHD x2)
Windows 7 home premium (genuine but refuses to activate as installed on prev computer, so no updates possible)


I think that's about all that should factor in to it





edit: CCC 10.12 installed, boots to windows ok, time will tell if it's stable in crossfired gameplay. Still, surely the newer drivers cannot be this bad! Surely something is very wrong here with complaints of notorious multi display flickering issues and general instability with the newer drivers.. worth discussion?

[savage1987]

well 10.12 hasn't worked as well as I'd hoped. It doesn't actually recognise the 6870s at all so it's just listing a "standard VGA graphics adapter" and the max resolution I can get on Windows desktop is 1400x1050 which is annoying when everything is set up for 1920x1080

I'm not even going to bother trying to play anything with this how it is.

Next try is going to be the drivers on the MSI DVD supplied with the cards, not sure what version those are but I'll find out soon I guess.

[Super_Low 91]

I just fitted my HD6990 an did a fresh install of drivers, once i logged in as soon as it loaded the CCC it would flicker an carry on then the display driver would crash an then moments later BSOD.

So after hours of trying everything i could think of i decided a fresh install of the OS was the last resort. After a fresh install of Win7 Home premium 64bit, clean system nothing on it installed CCC Crashed again,,

By this point i have really had enough, so i borrowed a mates copy of Win7 Ultimate 32bit Loaded it on, Installed CCC an would you believe it,, Worked perfectly loaded on a game runs beautiful..

I couldn't find much about the issue when i done some searching, all i could find is that it was a driver issue conflicting with something in the OS, unfortunately couldn't find much else about it..

Sorry i couldn't be of much help, I feel your frustration

[savage1987]

Interesting.


Tried a fresh start - formatted C:\ and reinstalled motherboard software, then reinstalled graphics driver software, all from manufacturers' DVDs - no internet used at this point - and she blackscreened again. Same problem outlined >here< exactly.

I really am running out of ideas.

Currently running with retarded system detecting both cards as "standard VGA graphics adapter" so it'll function in Windows.. and hunting for solutions.





COULD IT BE

Somehow I am overdrawing the PSU in a way I haven't thought of at all?

The display is set to switch to some non existent screen upon desktop? Like HDMI out or something? That even possible?

Windows or BIOS updates - could they possibly be contributing to the problem?




I really am running out of ideas. Every one I try seems to be my last straw but I will keep hounding this until I get it right.

[savage1987]

just stumbled across this, any thoughts?

Interesting. Did some more digging. Turns out that while everyone seems to think the boot is stalling at classpnp.sys, it is in fact stalling at the NEXT file in the boot sequence, which is cdrom.sys (in my case, anyway). That makes a bit of sense. In my case, there was a DVD drive while I installed and configured. It was in a docking base. In normal use, there is no dvd drive (it is a Thinkpad, which has no internal drive), and if I configure a boot log, the system reports that cdrom.sys did NOT load.

Given the fact that when it failed to boot the repair option claimed that the boot failed because a resource was not available, perhaps the BIOS was reporting a cdrom was available but the system could not find it?

But I'm just guessing. I wish that Microsoft would weigh in on this one. It has been going on for a long time if you Google for it.

Paul

[savage1987]

Also came across these posts suggesting I might try playing around with HDDs .. changing them to IDE fixed a similar problem for this guy:

Try enter to BIOS and change the disk mode from AHCI to IDE, that works for me.

My computer:

Acer Aspire 5536

Athlon X2 64

Win7 32bits



and this bloke says his issue was caused by a HDD as well (not even the OS drive)

a late reply from me, but is migth be helpfull for people with the same problem as above. I got the classpnp problem but none of the solutions helped for me. A re-install was the only solution i could think of but even in a re-install the system hung during the installation. I begun to think what the problem could be and started to disconnect everything. At last i got to the harddrives and there was the problem, the cable was fine, but the d-drive (not the windows 7 drive) was not. After disconnecting it windows started and made me a very happy man.

so I will try open my mind to those issues and have a play in BIOS.



Now that I think of it, AHCI was a pain in the ass to set up, and I finally got it working just before I moved to Townsville, around the same time as the computer first started having these issues.

I refuse to get too excited just yet, until the whole thing is fixed and works 100%.