Hi there
On boot keep pressing F8 till you get the safe mode screen. Choose enable VGA.... If the system boots ok. The next step would be to Google the Laptop name and Model .... your Google search should read something like .........."display driver (your laptop model and madel number) download and update the driver using start,,,,control panel,,, system,,,, Hardware,,,, device manager,,,, right click on yellow icon in VGA ,,,, update driver ,,, and point to the folder that you have downloaded the driver update to.
Hope this helps
Darren
South Africa