Yes, a little cmos battery. I have to take one out myself to reset the bios! You can download the manual from acer I think to locate it. It does invole carefully removing some things.
Transitional cell cancer of the renal pelvis and ureter is a disease in which malignant (cancer) cells form in the renal pelvis and ureter. The renal pelvis is the top part of the ureter. The ureter is a long tube that connects the kidney to the bladder. There are two kidneys, one on each side of the backbone, above the waist. The kidneys of an adult are about 5 inches long and 3 inches wide and are shaped like a kidney bean.
The large cup-shaped cavity at the junction of pelvis and femur or thigh bone. Mentioned in: Congenital Hip Dysplasia. (from the Latin for a vinegar-cup) the cup-shaped cavity on each side of the pelvis into which the head of the femur fits, forming the 'ball-and-socket' of the hip joint. Figure 1.