Steam / laptop issue

dont know if this is the correct place

i have an issue on my laptop which im sure is steam powered ...

i can use the lappy fine , then all of a sudden everything locks !!! i can click on things to open them , or go onto interent explorer but nowt happens

if i go to task manager steam.exe is at the top using 4 times more ks than anything else

if i close steam.exe my laptop then crashes and i have to re boot

when i re boot everything is fine again

also , as i play in a clan on fm some nights when i join the clan game ( me not hosting ) i can play for a few seconds and it boots me out , when i go to re join it says the i p i have is wrong - even thou ive just been in the game and 7 other guys are in using the same i p , again if i re boot i can join the game as normal

im guessing some thing is corrupt in my steam files and i need to do a reinstall - how do i do this without loosing fm12 and all my saves

any help would be much appreciated

Completing a Full Uninstall:

This uninstall guide assumes earlier editions of Football Manager were and are still installed such as Football Manager 2010 or 2011.

If this is not the case please delete the Sports Interactive folder instead of the Football Manager 2012 folder as outlined in each individual step:

* Before proceeding please make sure to write down the username and password of your Steam account as you will need them to reinstall afterwards.

Start by uninstalling Football Manager 2012 through Steam:

Right-click on Football Manager 2012 and select “Delete Local Content…”

Next, delete Sports Interactive from my Documents:

Start Menu > Documents > Sports Interactive > Football Manager 2012

Delete Football Manager 2012 (This will delete save data, please store elsewhere such as the desktop if required).

Next confirm the removal the Football Manager 2012 Settings.

Confirm that hidden folders are enabled:

Step 1

- Click on the Start button,

- Click on the Control Panel,

- From the Control Panel Select Classic View,

- Once selected locate and double click on Folder Options.

- Click on the View tab.

Step 2

- Under the Hidden files and folders section select the radio button labelled Show hidden files and folders.

- Remove the checkmark from the checkbox labelled Hide extensions for known file types.

- Remove the checkmark from the checkbox labelled Hide protected operating system files.

- Press the Apply button and then the OK button and shutdown My Computer.

- Now Windows Vista is configured to show all hidden files.

Step 3:

Remove the cache files for Football Manager 2012 as detailed below:

Go here:

XP:

C:\Documents and Settings\<username>\Application Data\Sports Interactive\

Vista/Win7:

C:\Users\<username>\AppData\Roaming\Sports Interactive\

Delete the Sports Interactive folder.

Then you will have to manually remove Steam:

1. Exit Steam.

2. Navigate to your Steam directory. (Typically C:\Program Files\Steam or C:\Program Files\Valve\Steam)

3. Delete all of the contents of your Steam directory.