[Ham-Computers] Slow problem

[WØQFC]

I thought that I had seen it all, but I have run into a problem that has me 
stumped for a solution.
The machine has slowed to a crawl when starting up or accessing programs.
I just tried to view a picture and it took over four minutes for it to come 
up.
I have run all of the conventional checks: defrag, memory usage, CPU load, 
cache and history clean, registry clean and defrag, cookies, minimum amount 
of desktop icons, etc., etc., ad naseum.
I suspect that the problem might be the hard drive, but every check I run 
shows that the drive is operating ok.
Does anyone have a idea of what might be wrong and/or how to determine what 
is causing the problem?
Your help will be greatly appreciated.
TIA
73
Gene, WØQFC (OK on QRZ)
Spring Hill, Florida 34606
WEB SITE:
http://www.w0qfc.com