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 word pelvis is generally used to refer to that part of the body just below the abdomen, which is the area where the trunk joins the legs. More specifically, the term refers to the part of the skeleton, also known as the bony pelvis or pelvic girdle, which encloses and supports that area of the body. The word means basin in Latin, which is what the shape of the bony structure resembles.