Guide. An iron test checks the amount of iron in the blood to see how well iron is metabolized in the body. Iron (Fe) is a mineral needed for hemoglobin, the protein in red blood cells that carries oxygen. Iron is also needed for energy, good muscle and organ function.
The following errors are the most common symptoms of faulty (or failing) computer memory modules: 1  Computer memory errors. 2  These include system computer memory errors, or blue screen system crashes that reference memory read/write, parity, interrupt, address, page faults, general protection faults or mismatch errors.
The role of memory in your computer. Memory (DRAM) is a component in your computer that allows your system to perform many of its everyday tasks, such as load applications, browse the Web, edit a spreadsheet in Excel, or experience the realism of the latest game. Memory is what allows your computer to perform its basic functions. As a general rule, the more memory you have, the better. If you turn on your computer, load Excel, and begin working on a spreadsheet, you'll have just used memory in several different ways.