Member Avatar for REDZXXX

Ok guys im new here and i need help.

Today i was cleaning out my computer with a sort-of damp rag

I took the cooler master fan off and got all the dust out etc.

Put it all together, plugged the power supply back in. and after that i pressed the button to start it up and everything worked fine fans came on and graphics card started running too.

BUT! The monitor didnt turn on (because it was on standby) and i have a mouse that has lights.. that didnt turn on and my keyboard didnt either

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Dani AI

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As described, the case and GPU spin up but the monitor stays in standby and most USB peripherals are dark. That pattern points less at the monitor itself and more at how the motherboard/PSU is distributing low-voltage power or whether the board is finishing POST. and raised display/cable and onboard-graphics checks; noted the common eMachines failure modes. Below are additional, concrete checks and a safe order to follow that were not covered yet.

First, inspect power connectors and the CPU area. After removing the cooler it’s common to nudge the 4/8‑pin CPU power plug or the CPU_FAN cable — if the board thinks the CPU fan is missing it can stop the boot sequence. Also check the GPU’s 6/8‑pin PCIe power leads (if present) and the 24‑pin ATX latch for a solid click. Look closely for bent pins in the CPU socket, thermal paste smeared onto the motherboard, or bulging/leaking capacitors around the VRM — a visual fault here often causes the symptoms you see.

Next, check the PSU and low-voltage rails before swapping parts. A multimeter or inexpensive PSU tester can confirm +5VSB (~5V with mains plugged), +12V, +5V and +3.3V are within ±5%. If you do not have tools, borrow a known-good PSU rather than repeatedly powering a suspect unit. Because you used a damp rag, allow the system to dry completely (24–48 hours) or clean residues with high‑purity isopropyl and only then retest — moisture can cause intermittent shorts that let fans run but stop POST.

Suggested troubleshooting order: let the system dry; visually inspect capacitors/CPU area; verify all ATX/EPS/PCIe power plugs are fully seated; try a single RAM stick in the primary slot and a PS/2 keyboard (if available) to isolate USB power issues; test PSU rails with a tester or known-good PSU; finally bench the board on a non-conductive surface. If intermittent power or bad rails show, replacing or swapping the PSU is the safest next step; if the board shows physical capacitor damage or bent pins, the motherboard will likely need professional repair or replacement.

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Member Avatar for REDZXXX

sorry for double post but..

its not my motherboard because i ahev a mousepad that lights up and that turns on so i dont think its the motherboard but i really am puzzled at this. its been 2 hours and ive taken all the parts out and put back in and nothing... :/ ... please dont tell me my motherboard is broken or ill be sad.. cause i have no money at all to buy a new one

Member Avatar for Chaky

I know this sounds blunt, but did you try to turn the monitor off and back on? Or did you check the monitor - vga connection?

Member Avatar for xcellpro6

Hi

Does your motherboard have a VGA port on it ?? If so remove the Graphics card and plug the monitor into the motherboard. This is to check the graphics card

The Bios should default to onboard graphics. Press DEL at start up and make sure this is so in the Bios.

If the system now starts properly. Shut it down and put the graphics card back in and seated properly. Restart and press DEL to enter the BIOS and set the proper config so that on restart it looks at the proper card.

Hope this helps


Darren
South Africa

Hope

Member Avatar for HECSpc.com

Hello
I have been a tech for a while and for the past year I have had dozens of emachines come in with the same problem. One easy way to test out if it is your board is to unplug it. Then plug it back in if the pc turns on right away without hitting the power button then you have a faulty board. If this is the case I suggest that you change your power supply as well. this is due to the fact that the power supply surges and spikes the board 75% of the emachines that I have serviced this year had to have the power supply replaced I lost a few boards because of it. Lucky that I am a dealer and was able to exchange them.

Another way to test your board is to listen to any beeps if you do hear a beep that means that your board is ok. If you do not open up your pc pull out the ram and turn it back on this should give you several beeps if you still do not hear any thing then it is your board.

Hopefully this will help you out.

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