upgrades
service packs
There are a number of Winsock fixes that can be applied to Windows operating systems with issues with the Winsock TCP/IP layer. Most of these fixes apply to Windows XP and older operating systems, as newer versions of Windows include tools to reinstall core system files.
A person that fixes cars is called a mechanic.
Operating System, Description of problem, Age of system, Customer name, Customer contact information
A person who fixes the glass portion of windows is called a glazier.
Most often people reinstall Windows. You may have better luck at the Microsoft support site. You can search for specific problems and find many fixes there.
Every apple product except the discontinued ones can be upgraded to Mac OSX Mountain Lion. The newest OS with more features and improvements with alot of bug fixes.
Updated software that fixes a known bug is often called a patch.
The firmware usually contains all of the code necessary to boot the machine. If the firmware is damaged, the machine will be unusable. Give the relative difficulty of upgrading firmware safely, it is often better to place only immutable code in the firmware, and make any changes / fixes necessary to the operating system on disk.
Patches
The group that fixes rates and regulates the railroads is called the ICC.
A person that fixes lights is called an electrician. They are able to fix and repair electric wiring, lights, and appliances.