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.
If it starts to fail, the computer can crash accidentally when the power supply generates a noisy signal. The random access memory (RAM) can also fail in an intermittent way, particularly if it gets hot. Because the values RAM stores get corrupted unpredictably, it causes random system crashes. The central processing unit (CPU) can also be the source of crashes due to excessive heat. The (often loud) fans on most common computers are there to prevent this type of crash, though they may eventually fail.