Below are the sites that we usually deal with when ordering computer parts. We have dealt with all of them and they all get 5 stars.
Directron is a computer parts distributor. They are based in Houston and have a very large selection of parts. Their prices are pretty good and their service is excellent. Orders placed before two oclock in the afternoon will usually arrive the next day by UPS ground. I can only verify that delivery statement for our area of Acadiana.
Newegg is another great place to buy comuter parts. They have a hugh selection and many customer reviews on almost any computer product you can imagine. They have several outlets across the country so delivery usually takes a few days. They are very reputable and returns are easy. This is a great place for the computer junkie in all of us.
Tiger Direct is another large supplier of PC parts and they are based in Miami, FL. I have dealt with them many times and had no issues. I have ,however, read that other customers ran into an occasional problem with them. I list them here because they are a major player and I have had no bad experiences with them.
The following links are also good to locate computer parts. The three listings above generally have the best prices but the following links can also serve you if needed.
Amazon is a place to find almost anything. They also are a good source for computer parts.
This is a link to one of the products that we use to diagnose your computer problems. This is a list of everything that is checked during our initial diagnostic run.
http://www.pcdservicecenter.com/diagnostics.php
I hope you find these links useful. Email us or give us a call if we can help.