...Now, all I get is the windows starting up and proceeding to my background wallpaper without any icons coming up, and the process shows idle time taking 99% of the op time..."
When you first start the computer, as soon as the brand logo (Dell, HP, or whatever) goes off the screen start tapping F8. Hopefully, if your quick enough, you'll see a menu in which you'll see "Safe Mode, Safe Mode with Networking" etc.
Choose Safe Mode. That should allow you to boot your computer.
If not, yank the hard drive, ship it to me, I'll scan it externally and look for bad sectors, malware, spyware, viruses, pr0n, you name it. I'll then load up whatever free space you have left with Rap music (or country, it's all bad) and set your wallpaper to a picture of my '07 919.
Seriously though, if you can't get the thing to boot, might be time to find a local computer guru.
If you DO get it to boot, and you can get online, get in touch with me. I can remote in over the interwebs and fix it. Not kidding; do it all the time.