when this happens, the blue screen usually shows an error message in capital letters at or near the top. For example:
KERNEL_STACK_INPAGE_ERROR
The actual error message can then be 'googled' to take you to web pages which quite likely will help you find the cause, and what to test. If you post the actual error message here (just the heading and any other code numbers, not the full text you get on the blue screen!) somenone may have had previous experience with it. There are many causes of a BSOD (Blue Screen Of Death) so the actual stop error it shows is vital in determining the cause.