Your first problem is you bought an AMD.....
Second problem is probably RAM...... but it still could be power supply.
Make sure you've got at least a 'good' 450w in there.... I prefer Antec, but any brand name, Sparkle, Enermax etc will do fine.
You should also do this....
Right Click on "My Computer"
Settings for Startup & Recovery
Remove the checkmark for "Automatically Reset"
If it'* a software (or maybe even a RAM error) this will cause the BSOD to stay on your screen and give you a STOP code which we might be able to use to track down the error.
Let us know if you get any STOP codes....