|A common thing that can happen with ram, even ram that worked fine previously, is the ram has, or has developed, a poor connection in it's slot(s). |
This usually happens a long time after the ram was installed, but it can happen with new ram, or after moving the computer case from one place to another, and I've had even new modules that needed to have their contacts cleaned.
See response 2 in this - try cleaning the contacts on the ram modules, and making sure the modules are properly seated:
For a laptop, you must remove both its main battery and AC adapter before you do that.
If this is a desktop (tower) computer
- the side of the case you remove is the one on the left when you're looking at the case front.
- also make sure the video card is all the way down in it's slot, if the system has a video card in a mboard slot, and make sure any other cards are all the way down in their slots if you have other cards in slots.
If you have both onboard video (a VGA port in the same I/O area where most of the ports are at the back of the case) and a video card in a slot (a VGA port on a plate in a slot space), the monitor must be plugged into the VGA port on a plate in the slot space - some bioses with generate beeps if you plug a monitor into the onboard VGA port in that case.
If doing the above does not help....
"Last night the power went out and the computer was on at the time, when she went to turn it on, it started beeping and will not come on."
Sometimes a power failure generates a power spike or surge that damages the power supply, or if there was a lightning strike near you or on the power grid near you that caused the power failure, that can damage the power supply or ANYTHING connected to the mboard.
- if the power supply is a BESTEC model, which emachines systems frequently have, BESTEC power supplies are a lot more likely to malfunction than average, and when a BESTEC power supplies fails completely, it is a lot more likely to damage something else while failing, often the motherboard.
Failing power supplies are common and can cause your symptoms.
Check your PS.
They often partially work, fans and hard drives spin, leds come on, yet you get no video and the mboard will not boot all the way.
See response 4 in this:
In most cases, the power supply for a desktop (tower) emachines computer can be replaced with any decent standard sized ATX power supply that has the same wattage capacity or higher. DO NOT replace it with a BESTEC model!
Standard PS/2 size - 86mm high, 150mm wide, 140mm deep, or 3 3/8" / 3.4" h x 5 7/8" / 5.9" w x 5 1/2" / 5.5" d , or very close to that, though the depth can be more or less for some PSs.