When i boot up the display is very faint and can barely be seen....I also attached a external normal monitor and the display is fine...i have checked the advanced display settings and it seems that the lappy is set up to view with a standard monitor and not a laptop display (If this makes sence!!)
Sorry i'm not very good with PC's and need some help
Is the display feint and hard to see because it is dark and you cannot increase the brightness? I used to work for a firm servicing Dell laptops. The usual reason for this problem was failure of the inverter, a little device which powers the display panel's back-light, or, rarely, the back-light itself may fail.
I think you will have to send it in for service. A replacement inverter shouldn't set you back too much, but if the back-light has failed you will need a new display which will be expensive. They are not difficult to replace but you are unlikely to be able to get the parts to do it yourself.