HELP! Scrypt Miner setup not working out, Driver/SDK issue?

[thetedderbear]

Much thanks in advance for any help you guys can give.

So here's the issue: I'm trying to learn to mine LTC/altcoins (never really delved into mining, but I spent some time a year ago or so trading BTC, decided I wanted to learn more aspects of cryptocurrencies). I've acquired a friend's old gaming PC for the job, and heres what I've got, that I know of:

AMD Radeon 6800-series (I was told it's a 6870 - is there any way to check between -50 or -70 without prying open the case?)
Windows 7 32-bit
cgminer 3.7.2
Catalyst driver 12.8
SDK 2.5

I got the rig running on a basic setup before I messed with the drivers. There was no SDK and I believe the Catalyst was 14.1 or maybe upper 13.x's. Computer ran super slow and I made like $1USD in a week. Not exactly ideal.

I've spent all day googling, reading forums, etc, and I've cleared off all the Catalyst software using ATIman Uninstaller. Did a clean install of 12.8 and SDK 2.5, and my basic .bat file runs, but in cgminer I get the error:

"Error -1001: clGetPlatformIDs failed <no Open CL SDK intalled?>"

Followed by

"clDevicesNum returned error, no GPUs usable"

My basic .bat file (which worked before) is:

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt -I 19 --thread-concurrency 6720 -o stratum+tcp://us-east.multipool.us:7777 - u thetedderbear.tedbear1 -p x

What am I doing wrong?

After much googling, I'm unsure if I'm using the right driver, if I have the wrong SDK, or if I even need the SDK?

I'm very much a noob to mining, and a noob to coding and delving deep into computer systems in general. Any help is greatly appreciated, and please be detailed, so I know what you're talking about lol.

Thanks guys!

[chrisbfrpky]

I'd try removing the graphics software and doing a fresh install. Keeping in mind to make sure the new install is the 32 bit driver pack and not the 64 bit pack. I had similar issues when I updated the drivers on a 7950. The 64 bit drivers absolutely will not work on a 32 bit system. If you run into problems finding the 32 bit driver online, ask your buddy if he has the original driver disks for the comp. This is just my opinion, but I'd stay away from the new 14.xx series drivers for a bit, just until they're proven a bit more. the 13.xx series drivers are tried and true , so if it ain't broke, don't fix it. Don't panic, it's probably something simple. BTW, I thought the 6800 was an onboard graphics system? What kind of KH numbers are you getting? Best of luck. Chris B.




edited to add "Graphics software"