Shut down with blue screen memory dump

I've been having this problem for 3 days already. I did some google search and found these in Minidump folder, but I don't understand what they mean. Can somebody please tell me what's wrong with my Sony laptop?
C:\Windows\Minidump\072012-23384-01.dmp
C:\Windows\Minidump\072112-48017-01.dmp
C:\Windows\Minidump\072112-51573-01.dmp

My laptop is Intel Core2 Duo 2.20GHz, 4GB memory RAM, 64-bit Windows 7 Premium

Thanks in advance!!!

Welcome
If you supply us with the following information we can help.
Blue Screen of Death (BSOD) Posting Instructions - Windows 7 Forums
We are in the process of preparing instructions for Vista. Follow the instructions above but contiune to post in your original thread.