cant find my synaptic manager, dont think i have one

Standard Synaptic item is under the menu System → Administration → Synaptic Package Manager

You can also use terminal to make some command instead of use synaptic or to install Synaptic

To install synaptic and to perform some usual system packages check using terminal...

Open a Terminal from the menu Applications->Accessories->Terminal

Tip: right click with mouse on the terminal title caption and select the item "Always on Top" doing this you will force the terminal window to stay on top of the other windows and you will find very easy to copy single row from this web page into the terminal...
Something more about using the terminal https://help.ubuntu.com/community/UsingTheTerminal

Then type or better copy and paste a row a time then press enter:
(Tip: select the single row to copy then right click into the terminal and to quick paste click with middle button of mouse )

sudo dpkg --configure -a
sudo apt-get -f install
sudo apt-get --fix-missing install
sudo apt-get clean
sudo apt-get update
sudo apt-get dist-upgrade
sudo apt-get clean
sudo apt-get autoremove

give your user password when requested, you don't see nothing when you type it, then press enter.

Hope this helps

Thankyou. Think thats worked. Its now came up my username in he terminal. Is that it finished, computers telling me to restart. dont wanted to if its not. xxx

Thanx very much. Ur a legend! xxx