|Your PSU isn't a very good one but I doubt it's the cause of the BSOD. Please post the entire error message, STOP code & any file that's referenced.|
To check your RAM, 1st make 100% sure the settings are configured properly in the BIOS (don't simply load Defaults), then run memtest86. If any errors are found, test each stick individually to determine which one is bad. The bad stick will have to be replaced. Contact Crucial & setup an RMA.