What does ctr,alt,delete accomplish ?
What does your desktop look like if you wait till your sure everything is loaded? Do you have a Task Bar ? It been assumed you don't.
Makes a big difference to continue.
Sounds like you have too much loading.
Try Selective Startup in msconfig.
Try your Windows keys,like E-mail.
Note : Remove all cd's or floppy disks.
Shut down all things like Firewalls and Virus protection till you get a normal
desktop and Taskbar.
The Taskbar has "Show Desktop" option.