Sluggish PC issue /phenom quad core Win 7

[SilthDraeth]

I ran vista x64 for the longest time, and my comp seemed really fast, but lately it has been sluggish. Now I believe all of this happened after upgrading to Windows 7, but I can't really pinpoint the time.

Basically, scrolling up and down on webpages that have fully loaded, the PC seems to lag. It seems to load up slowly after an inital reboot. And World of Warcraft loads in real slow, a lot slower than my wife's computer that has lower specs. I built both systems.

What I would like to know is: Is there a program like memtest86 that I can run from a bootable disc to check my cpu to see if it has errors, or is damaged? Also to check my video card?

I work on comps etc for a living, and we use PCdoctor at work, my thoughts on it are not fully decided, but I am just wondering if any old pro around here knows of a free program I can use at home.

Thanks.

Here is my system specs:

VisionTek 900244 Radeon HD 4870 512MB 256-bit GDDR5 PCI Express 2.0 x16 HDCP
ASUS M3A78-T AM2+/AM2 AMD 790GX
CORSAIR XMS2 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)
AMD Phenom 9950 X4 Black Edition Agena 2.6GHz Socket AM2+ 140W Quad-Core
COOLMAX CUG-700B 700W ATX12V v2.2 / EPS12V SLI Certified CrossFire Ready Modular

 

[AndroidVageta]

This is real basic as Im bout to hit the sack...but have you emptied your Temp folder? defragged your hard drive? How many back ground processes do you have running? Have you ran any anti-virus to check for those problems?

 

[Reincus]

Did you do a clean install of Windows 7 or go the 'upgrade' path?

 

[SilthDraeth]

You know, I may have did upgrade. I have been trying not to make myself do a clean install, but I should have thought of that. Low background processes, temp folders get emptied, defrag is scheduled.

I will try a clean install here shortly, and see if that helps, if none of that works, I am still looking for a program to run at boot.

Reincus thanks for asking that question, *slaps self*