Will be very tough and will strain your wallet as well.
First, check whether your graphic card is intergrated into the
motherboard. You can usually see it from the specs list or from
your receipt.
If its not intergrated, good for you, shouldn't be a problem but
will still cost a bomb.
If its intergrated, think the only way is to bring back to the
service center. It may not be able to upgrade at all
