<p>I've seen this problem a few times, it could be just about anything unfortunately.  I would try changing your thread concurrency, and intensity values.  Some people have also recommended different drivers.  </p>

CC BY-SA 3.0
2013-12-24T22:58:02.320Z
2013-12-24T22:58:02.320Z
tbenz9
<p>Cgminer opens up, stays for like a second or two and then Windows gives me an error message. Mining (bitcoins?) without --scrypt works fine but with the scrypt parameter, I get the message seen in the window below.</p>

<p><img src="https://i.sstatic.net/LwVle.png" alt="cgminer with scrypt"></p>

<p>The settings for the .bat file are also in the image and I think they've been configured correctly. I tried uninstalling, installing different drivers. Read somewhere that the new ones don't work (tried with the latest drivers already) so I installed Catalyst 12.2 Beta (GPU is a Radeon HD 6670, Driver Version: 9.10.8.0 according to device manager) and it still doesn't work.</p>

<p>Help? :(</p>

CC BY-SA 3.0
2013-12-25T03:05:32.073Z
I have ran into the issue that after mining bitcoins my card will not mine scrypt without a full reboot of the system.  Not sure what causes this but try it out and see if it helps.
Mark S.
CC BY-SA 3.0
2013-12-26T19:01:12.493Z
Tried that, still doesn't work.
SS'
CC BY-SA 3.0
2013-12-26T19:06:22.447Z
Checkout https://litecoin.info/Mining_hardware_comparison and see what settings are working for other folks particularly the settings that tbenz9 mentions (intensity and thread concurrency)  also included with cgminer is a SCRYPT readme that will tell you the steps to follow to tweak these settings.
Mark S.
CC BY-SA 3.0
2013-12-26T20:45:04.480Z
Shaders! Including the appropriate shaders value for your GPU does wonders! And yes, sometimes, after passing the miner a set of params that crash it, the GPU gets "stuck" in a bad state - you need to cold-reboot. So yes, reduce intensity and threads, set an appropriate shaders value, and cold-reboot just in case.
Joe Pineda
<litecoin><cgminer><scrypt><dogecoin>
When launching cgminer with scrypt parameters, Windows gives an error message. Why does this occur?
SS'
# When launching cgminer with scrypt parameters, Windows gives an error message. Why does this occur?

(Asked by: username_0 on 2013-12-24)

Cgminer opens up, stays for like a second or two and then Windows gives me an error message. Mining (bitcoins?) without --scrypt works fine but with the scrypt parameter, I get the message seen in the window below.

![cgminer with scrypt](https://i.sstatic.net/LwVle.png)

The settings for the .bat file are also in the image and I think they've been configured correctly. I tried uninstalling, installing different drivers. Read somewhere that the new ones don't work (tried with the latest drivers already) so I installed Catalyst 12.2 Beta (GPU is a Radeon HD 6670, Driver Version: 9.10.8.0 according to device manager) and it still doesn't work.

Help? :(

**Tags:** litecoin, cgminer, scrypt, dogecoin

> **Comments:**
> **username_1**: I have ran into the issue that after mining bitcoins my card will not mine scrypt without a full reboot of the system.  Not sure what causes this but try it out and see if it helps.  
> **username_0**: Tried that, still doesn't work.  
> **username_1**: Checkout https://litecoin.info/Mining_hardware_comparison and see what settings are working for other folks particularly the settings that username_3 mentions (intensity and thread concurrency)  also included with cgminer is a SCRYPT readme that will tell you the steps to follow to tweak these settings.  
> **username_2**: Shaders! Including the appropriate shaders value for your GPU does wonders! And yes, sometimes, after passing the miner a set of params that crash it, the GPU gets "stuck" in a bad state - you need to cold-reboot. So yes, reduce intensity and threads, set an appropriate shaders value, and cold-reboot just in case.  

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## 1 answers

### Answer by username_3 on 2013-12-24. Score: 1

I've seen this problem a few times, it could be just about anything unfortunately. I would try changing your thread concurrency, and intensity values. Some people have also recommended different drivers.


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