Answer:
There are several potential startup problems to consider when an upgrade goes awry. Always start by turning off your system and disconnecting the AC power cable from the computer before working inside your computer case. In addition, ground yourself to prevent a static electricity discharge from damaging internal components when you touch something inside the case.
It's easy to dislodge power and signal cables while working inside a computer case (especially inside a tight chassis), so recheck all of the cables inside to make sure the connections are tight. Also, take a moment to check any of the expansion cards inside your case. Memory installations often flex the motherboard slightly. This may sometimes be enough to move an expansion card in its slot and cause a short circuit. AGP cards use very small metal fingers and can be particularly prone to shifting and short circuits. Make sure that each expansion card is installed evenly and completely.
Now let's take another look at all of the memory modules, including the memory you just installed. Memory modules also should be seated evenly and completely, and you should see plastic clips locked into each side of every module. If problems persist, remove the new memory and see if the system boots from the original memory. If this test works, it may mean that the new memory is inappropriate or incompatible with your system. Check the new memory specifications against your system requirements. |