Hi Daniel,
It is amazing that your laptop even boots up. Sounds like you need a new motherboard. Probably not worth the cost even IF you could find one. If your data is what is really important then just take the hard drive out as instructed on this page:
[guide|12634]
Then either install it in a desktop computer and copy the data you want over to the other hard drive or for a laptop you will need to get an external USB hard drive case and install your broken laptop’s drive into it. Then just plug in and copy data.
Does this answer your question?