(no subject)

[misterhappy.livejournal.com]

I've got a real problem here, and its REALLY pissin me off.
I'm not a computer amateur (i know, lots of people say that).
suffice it to say, i'm A+, N+, MCSE, and all that crap, so theres no need to treat me like a moron. just need some help.

my system, built by me, has been running for a year now.
Just recently, i've been having a problem.
When I run things, no particular program, my whole computer freezes.
Sometime it happens when i start Outlook, IE, ICQ, my tv program, Agent.
Not when these have been running, it only freezes when they START for the first time, since a reboot, or a fresh start.
Any one of these programs seem to freeze it, but not all the time.
I have reinstalled my system (WinXP Pro), I have swapped HD's, swapped TV cards, swapped RAM.
CPU and graphics card NOT overheating.
CPU NOT overclocked.

I have only 2 thoughts left.
1. Its the CPU. Though I dont know how, for some reason, maybe its just hooped?
2. Its the PSU. its a 300W AOpen PS (came with the case) Perhaps its not enough, but i dont see how, since i know someone else who has the same one, and has WAY more components than I do.
There are no conflicting resources in Windows, or in BIOS.

My comp stats below.
someone PLEASE have an idea. I"M GOING NUTS!!!!!

AMD Athlon XP 1600+
ASUS A7V266
Thermaltake Volcano 7+ HSF
AOpen 300W PS
2x Quantum Fireball Plus 40gig 7200rpm
1x Seagate Barracuda 80gig 7200 rpm
Pioneer 10/40 SCSI dvd
Yamaha 20/10/40 SCSI CDRW
Exabyte 20G/40G Mammoth SCSI Tape drive
ASUS V8200 GF3
Logitech cordless keyboard
Logitech Optical cordless mouseman+
PCI slots:
slot 1-empty
slot 2-Adaptec 2930CU SCSI controller
slot 3-Hauppage WinTV GO (have swapped with ATI TV VE, not successful results)
slot 4-DLink 530TX NIC
slot 5-Creative Soundblaster Live! 5.1

A bunch of USB stuff, but i have tried disconnecting them, to no avail.
HP 2300C scanner, lexmark Z55 printer, Cicero 7 port usb hub, IOmega 250MB zip drive, Creative PCCAM 600 digital camera, Gravis Destroyer tilt gamepad