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 renal cortex is located between the renal medulla and the renal capsule. The renal capsule is defined as the layer that surrounds the kidneys with tough fibrous tissue. The capsule is covered in a connective fatty tissue.