Firefox was working, then when I clicked the icon to open, it said it needed to restart to complete a previous installation. After restart, it will not start at all, goes straight to crash report in regular and safe mode.

Question

The only recent changes to the PC are:
Ran latest Microsoft updates.
Installed Halo2, F1 and TinTin games (all purchased from store, installed off original CD)
Installed DirectX
Installed Microsoft Games for Windows Live and reditributable
Installed Visual C++ 2005 redistributable.
Have tried new installation of FF, won't install, repeats dialog about needing to restart to complete a previous installation (see question above)

Answer 1

Below KB describes the article that also helps:
http://support.microsoft.com/kb/839803
To increase the timeout value in the registry, follow these steps:
Start Registry Editor (Regedit.exe).
To change the value data for the ServicesPipeTimeout DWORD value to 60000 in the Control key, follow these steps:
Locate and then click the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet
Click the Control subkey
Right-click the ServicesPipeTimeout DWORD value, and then click Modify.
Click Decimal.
Type 60000, and then click OK.
If the ServicesPipeTimeout value is not available, add the new DWORD value, and then set its value data to 60000 in the Control key. To do so, follow these steps:
Locate and then click the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet
Click the Control subkey.
On the Edit menu, point to New, and then click DWORD Value.
Type ServicesPipeTimeout, and then press ENTER.
Right-click the ServicesPipeTimeout DWORD value, and then click Modify.
Click Decimal.
Type a value of 60000, and then click OK.
The value is 60000 milliseconds and is equivalent to 60 seconds or to one minute.
Note This change does not take effect until the computer is restarted
Nikita