Click and drag in windows 7 sticks after holding left click for a couple of seconds.

mouse touchpad mouse-click

This sounds an awful lot like you have ClickLock turned on:

1

Related

Configure router to redirect different hostnames to different machines
Copy selected text with links appended in plain text?
change drive letter from D: to C: for Windows drive!
Will an ADSL2+ modem work with a VDSL input connection?
Hide programs (such as Skype) from Windows 7 taskbar
How to disable and enable a USB port via command prompt?
How can I get Skype to not stay minimized in the task bar?
I just formated my external HDD and gave it two partitions. What are these files it created? Mac OS X
How do I convert a podcast to an audiobook / music track in iTunes?
"Show hidden files" option is not working
How to use GeForce GTX 1050 in VirtualBox
Prevent URLs from specific domains from being saved in Firefox history