Lost Memory

Walkthrough:
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-First off, check trashcan, get watch. Then, click around motherboard,
 get battery. Apply to watch. Now, you can see better.
-Check bottom drawer, get phone list (and number 2).
-Look left to window, click slightly above top of window, get pliers.
-Check the books to right of window, get punchcard/grey plastic.
-Below window, check behind empty plant pot for keys.
-Go right a few screens, check phone to get your phone number (check 
 against phone list to see that you are in room 4), check keypad to the
 right one screen to see that you are on floor 2, and get SatNav out of
 coat.
-Scroll a few screens in either direction, find a shelf and check the 
 boxes to the right of the shelf for a telescope.

Number locations:
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1 Behind beer bottle on top of shelf
2 Bottom drawer of computer desk
3 On top of clock
4 Under computer desk, under drawers (might have to click from a few 
  different angles)
5 Click under center of computer desk, then click around left edge to 
  find it behind the drawers
6 Behind right underside of chair
7 Under right side of computer desk, on shelf
8 Use pliers on air vent to pull number 8 out

Now that you have the numbers, go to the window, and lower and flip the 
blinds. Click on the bottom right corner. You get the number 25813746. 
These are the order the numbers will go into the box in the bottom of 
the shelf.

Now, use the telescope with the blinds up to notice the constellation 
Orion.

Head over to the shelf and input the numbers (25813746 in case you forgot)
into the box on the bottom. Use your keys to unlock the box. The right 
side opens and you can pick up a document that gives clues to the username.

Computer username
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Part 1  - Orange
Party 2 - Part of the Fibonacci sequence, add the last two together to get 55
Part 3  - Orion (as you found out earlier)
Part 4  - Use the grey plastic with a hole cut out to get the word "signs"
So... orange55orionsigns is the username.

-Head to computer and flip switch on bottom of monitor. 
-Input username orange55orionsigns. 
-Check SatNav (given hint Mum'sPostCode) to get BH232LP as the password. 
-Log in and remember that we are on floor 2, in room 4. 
-The door code for our room is 4793.
-Head back to door and input 4793 in keypad, press button on bottom. 
-The door is now unlocked.....