Did the tech swap out the CPU to verify if it is good/bad vs the mother board being good/bad.

I had the same problem when i was having my PC problems and using my main HD as a slave.

If your MB & CPU are over 4 yrs old you might just replace them both- prices have come down a lot and speeds have gone up

I got a MB & CPU with most of the other stuff built on to it already- vid, sound, network, phone, 4 USB ports, firewire - i think that is most of it.
so no other cards to buy and my same wireless card was able to be used on it also.
I did get a SATA hard drive this time around.
about 150.oo for all that at our local owned PC parts store - they even mounted the CPU on the mainboard for me - so i just had to put it in the case and connect everything- which the book was very helpful.
faster , quieter, did I say faster LOL??