Changed power supply but emachine c2825 still will not boot up? I was not getting any power before I replaced the power supply. Now there is power for lights and fan but system will not start. I rechecked cables but still have a problem.
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A good way to tell is disconnect your hard drive's, & CD/DVD ROM's power & data cable. Try to boot.
If you get the same results then you can try & remove any PCI cards from the board, remove your ram stick. Try to boot. If you get an error beep because you are missing ram than this is good.
Replace 1 ram stick back into your motherboard & try again. If it boots then you know the other stick is bad.
If removing all the non-essentials from your motherboard doesn't work then all you have left are the motherboard & power supply. A simply power supply tester or spare power supply will tell you if it is your board or not.
Did you check the CMOS battery and the CPU fan. Those are two things that if aren't working the way they should be, then some computers will not boot up. Try this first then post a response if you still can't get it working.
Do you mean the power supply fan or the processor fan?
Of the assemblies in a desktop, the power supply is the least reliable and the internal fan the most unreliable part.
Since a failed fan can allow other parts of the supply to degrade, I recommend replacing the supply, not just the fan.
In eMachines, these are standard form factor (ATX) supplies so you would only need to order the same or higher power rating to have it compatible with your case.
Bottom line: Either your power supply or (hopefully not) the mother board has gone bad.
Replace power supply (remove old one), take to local independent computer shop, ask them for new unit. Should be around $50.00. - no more. After reinstall, if still no fans, boot, etc. Replace motherboard or buy a new machine. MB's installed probably will run you around $250.00-ish.
try replacing your ram.if your ram is bad you wont get no picture on your monitor but your puter will start.2 if you have a video card turn off you puter for a few minutes and plug your monitor to your original display.
Apparently this model has a bad motherboard, which manifests as a power warning and eventually a refusal to boot up. You can replace the power supply (as far as I know, any generic one 250-watt or better will work) but it's unlikely to help. You can buy a new motherboard (and new power supply, if you want to) direct from eMachines, but it's also likely to fail pretty soon. Your best bet is to get a new computer (NOT an eMachines one) and put your hard drive in as a slave so you can get your data off.