Last night I turned my laptop back on after it was off for approximately 2 hours. It started, loaded up to the desktop screen and then stopped. It showed the desktop design but none of the icons, start menu, toolbars...nothing. It worked fine the 2 hours before. I contacted Dell support, they said my motherboard needs to be replaced. Is this the only solution? How can it work 2 hours before perfectly fine and then just die? If this is the only solution about how much does a motherboard cost...is it worth replacing or should I just get a new laptop?