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.
1 If one of your computer's RAM modules fails completely, your computer won't even turn on. 2  Most of the time, however, memory fails slowly and will work up to a point. 3  If your system memory is failing, your computer may power on but then freeze, stop, or reboot continuously at some point during Windows startup.