Weird problem solved
 

I couldn't for the life of me find out why when I re/started my computer some things would hang. This only started happening recently. For example I couldn't go to msconfig, or device manager, or skype, etc until like 30 seconds after boot.

Well I found out the problem after nearly wanting to destroy my computer. I unplugged my G19 keyboard and plugged in my trusty K120. Low and behold now I can use everything near instantly from boot.

Any ideas what was causing that problem?

Now I will be getting a Corsair K90.

Edit: I plugged my G19 back in and it isn't having the same problem...... hmmm weird. I still do have the problem that my G19 doesn't remember the colour I set it to. It always starts as white and I have to change it back to red every time I re/start. So I will be getting a new keyboard as it annoys the heck out of me.

I've had similar issues to you if I leave my SGS1 plugged in when I start up the computer, windows will hang at the loading screen. I'll have to unplug it and restart the computer. No issues when it's plugged in after Windows has booted

I had the same problem with a corrupted USB stick that was plugged into the back of my rig. In fact, whenever i would do a warm boot, it would hang. I'd have to do a cold boot to even post.

USB likes 100 if you are running 101, 102 , 103 or more your going to see this problem.

Cure for slow boots because of too many USB devices.
 

I had the same problem with Windows 7 which produced boot times of up to 2 minutes while hanging at the "verifying pool data" screen. It didn't take me too long to figure out the cause was too many USB devices, (2 external drives, plus keyboard, mouse, charger etc) connected to my PC. It literally took me days of searching before I ran across the fix. Very common problem and one forum I found with the answer.

Disable USB storage in the BIOS. Some have reported that they had to unplug and replug their USB devices to force detection. I didn't have any issues with my peripherals or the external drives, everything worked great.

Really wish I had retained the site and the posters name where I found this answer. He/she deserves all the credit.