Member Avatar for trixrodson11

I have encounter the same problem lately. I have put a RAM w/o turning off the Unit. then the Unit get Hanged up. and when i turn on the processors fan turn on then turns off and on again... but theres no display. Help Pls.

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A short, practical diagnosis and next steps for the fan-cycling / no-display symptom after hot‑plugging RAM. ’s description matches a common failure pattern: the system tries to spin up, protection trips (fans stop), then it restarts — and no POST/graphics appears. is right that hardware can be damaged by inserting RAM while powered; ’s CMOS-removal idea can clear state but won’t fix physical damage; ’s BIOS suggestion only helps if the board can at least POST or supports a no‑CPU/USB‑flashback recovery method.

Start a controlled, minimal test (one clear sequence):

  • Fully disconnect mains, press and hold the power button 10–15s to discharge, then work on a nonconductive surface.
  • Remove all nonessential devices. Bench the board outside the case with only: PSU (24‑pin + CPU 4‑pin), CPU + cooler, one known‑good RAM stick in the primary slot, and video (onboard or GPU as required). Use a small system speaker on the header to catch POST beeps or watch any motherboard debug LEDs/post codes.
  • Visually inspect the board and socket: burned components, bulging capacitors, melted plastic or bent pins (CPU socket or RAM slots). Smell for burnt electronics. Any of those = likely hardware failure.
  • Swap key parts if available: a known‑good PSU, a single known‑good RAM stick, or test the suspect RAM in another machine. If the PSU immediately shuts down or behaves differently when the CPU 4‑pin is connected, that points at a short in the VRM/CPU area or a failed PSU protection trip.

Notes and cautions: flashing the BIOS is not a recovery step unless the board specifically supports flash‑without‑CPU (check the manual). Do not try to probe or run the board powered with metal tools nearby. If minimal bench tests with known‑good parts still show no POST and repeated fan cycling, the motherboard or CPU has almost certainly been damaged and replacement or professional repair is the reasonable next step.

Recommended Answers

All 13 Replies

Member Avatar for crunchie

Turn the power off at the wall, then remove the battery from the motherboard. Go and have a cup of tea and a biscuit.
When you have finished, put the battery back in and turn the power back on.
Attempt to start the computer.
Post back the results.

Member Avatar for Rik_

Fitting ram into a powered on system is an extremely bad thing to do. It's quite possible that you have damaged the ran and / or the mobo.

Member Avatar for trixrodson11

thx by the way i will try it.. thanks guys! Bad mood Damages everything... ahahahahha

Member Avatar for trixrodson11

what do you mean by turn off by the wall? ^^

Member Avatar for Rik_

Turning the power off at the wall means what it says. It means to cut all mains power.

Member Avatar for trixrodson11

im done doing it already. unplug all and get the battery. but still no progress. the fan turns on for a while and off then turns on continuously... still no display...

Member Avatar for Rik_

Fitting ram into a powered on system is an extremely bad thing to do. It's quite possible that you have damaged the ran and / or the mobo.

As I have said before. I believe you may well have done serious damage to it.

Member Avatar for Quick_Silver69

I have encounter the same problem lately. I have put a RAM w/o turning off the Unit. then the Unit get Hanged up. and when i turn on the processors fan turn on then turns off and on again... but theres no display. Help Pls.

Well in this case update the bios of the computer.. That will certanly resolve the issue u r facing if there's no hardware issue.... :cool:

Member Avatar for trixrodson11

ok thx by the way... is it ok when im trying to unplug all the thins inside the front panel restart is dettached... ahehehhe will the unit works w/o it?

Member Avatar for trixrodson11

ahmm.. how to update it? i cant even turn it on? ^^

Member Avatar for Rik_

If you mean the Power Button, no. If you mean the Reset Button, yes.

Member Avatar for monjes

me I have a similar problem... when I unplug the quadrant pinned cable from the mother board, the fans are powered but there is no display (the monitor does not pick) but when intact the fans are not powered. I have changed the ram in the different slots in vain. (I also replaced the power supply) pliz heeeelp, I dearly miss my pc.

Member Avatar for Rik_

monjes, you really need to start a thread of your own.

Try resetting your cmos. Your motherboard manual will tell you how to do it.

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