G A :
I agree w/ richards, that you might need to return this Inspiron.
Would you describe yourself as an advanced, intermediate or beginner computer user?
Have you run memory / ram diags from the Vista DVD? Do so. If it passes, download & run MemTest86,
www.memtest86.com . You will need to create a bootable CD.
Run HDD [ hard disk drive ] diags from the Dell utility disk.
Which HDD brand, model & model # have you?
Control panel > classic view
1. Admin tools > event viewer
Applications
Look for errors. Provide the details
System
Look for errors. Provide the details
2. Problem reports & solutions.
What is listed?
RF123