Laptop crashes after couple minutes. Multiple errors

Hello and welcome paschaa first of all we need a few more system specs mate
System Info - See Your System Specs

Run this and see what the temps re doing Speccy - Download < download from piriform

You can also run these in safe mode if necessary

https://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html
https://www.sevenforums.com/tutorials/433-disk-check.html
if these come with nothing run these


http://www.superantispyware.com/

http://www.malwarebytes.org/products/malwarebytes_free/

http://www.bleepingcomputer.com/download/adwcleaner/

download from bleeping computer – delete any rubbishthese find.

Paschaa mate this could be a heating problem can you run Speccy in the short time the machine will run and let us know the temps of the CPU, GPU and drives etc.
Speccy - Download < download from piriform and make sure you let us know what temps are for what machine.

The slowness of the desktop can be speeded up somewhat using this
Optimize Windows 7 < read carefully and do a registry back up before you do anything - I do just as a precaution not for any other reason because the author is in my mind one of the best computer fellows in the world.
Registry - Backup and Restore it is easy and quick to do as well.

Paschaa sorry this is dragging out but I think there is something really out of whack if it will not boot at all from the hardware on board.
If you have access to another machine do this - it does take a long time but at least we shall know 1. it will boot to something 2. it will at least test the RAM
MEMTEST
https://www.sevenforums.com/tutorials/105647-ram-test-memtest86.htmlthis one you will need to make a bootable disk set the BIOS to optical (or USB if preferred) boot the machine and let it run for at LEAST 8 passes unless the errors come up straight away. Takes fair time to complete and some leave it running overnight.
If the errors come up quickly then you can stop it and you will have to test each stick and maybe in each slot to sort the bad one out.

Ok mate it is a pity we cannot get hold of those temps though - one way would be to use this ditty of mine

BOOTABLEUBUNTU

Makea bootable Ubuntu disk http://www.ubuntu.com/download

Setthe BIOS to boot from the optical when the machine boots it will show you ascreen with TRY or INSTALL > select TRY

Whenit is finished - it takes very little time you will get a screen like in thepic .

Openthe drive you want > User and dig down until you get to the data / settingsyou may be able to copy / paste the material you want to an external source orother installed drive doing this.

Iam not sure if it will but I have recovered tons of data etc using this methodboth on "dead" or just plain drives that you cannot get data fromusing Windows.
When you get this booted then you could download Speccy to a stick or even run it within Ubuntu - it doesn't take long to boot the Ubuntu but use ONLY the TRY and not the INSTALL

see my pic for where to find the net it uses Firefox but at least you can access the net it is though usually what I show for accessing drives etc.