Blue Screen of Death

Hello Sally. I do understand your issue. I apologize for the inconvenience caused.  Please follow these steps to send us diagnostic information from your computer. This information will allow us to analyze the situation and provide you with a solution:
Click on this link http://www.avg.com/filedir/util/AVG_SysInfo.exe to download the AVG SysInfo tool.
Run the downloaded tool.
Click Continue to agree with AVG’s license agreement and privacy policy. AVG SysInfo will now gather the data.
Once the diagnostic output is ready, you may add comments, or click Attach file or Screenshot to provide us with extra information.
Fill in your email address, and then click Send output.
We will analyze the received files and provide you with further information. Thank you.

This question is similar to one in the list.  I tried scanning my computer last evening with new updated AVG 2015.  I use Windows XP SP3.  Manual Scan results showed 2 threats in list then went to System Fail Blue Screen… c000021a 

Lookup online says to contact software manufacturer…

Computer restarted fine but same results finding more threats each time before blue screen.

I've deactivated AVG and left in recommended link scan option.  

Is it safe to uninstall and reinstall AVG?

Thank you,

Hello Sally. I do understand your issue. I apologize for the inconvenience caused.  Please follow these steps to send us diagnostic information from your computer. This information will allow us to analyze the situation and provide you with a solution:
Click on this link http://www.avg.com/filedir/util/AVG_SysInfo.exe to download the AVG SysInfo tool.
Run the downloaded tool.
Click Continue to agree with AVG’s license agreement and privacy policy. AVG SysInfo will now gather the data.
Once the diagnostic output is ready, you may add comments, or click Attach file or Screenshot to provide us with extra information.
Fill in your email address, and then click Send output.
We will analyze the received files and provide you with further information. Thank you.