"I dont know If my BIOS supports LBA or not."
If your BIOS does not support LBA then the problem can still be fixed. Here is a thread that explains what the problem is:
I suggest that you try to fix your problem by setting up a small /boot partition at the beginning of your hard drive. If the BIOS does not support LBA then the /boot partition will fix the problem. If LBA is not the problem then the /boot problem will do no harm.
Be prepared. Create a LifeBoat CD.