My PC won't turn on, the green light is blinking. Solved

Question

Hello,  This morning I tried to turn on my computer but I can't start it! I looked at the back and I saw a flashing green light (not like usual)  HELP!  I can't start my computer  It's a Compaq Presario, it's 5 years old

travis63 · Accepted Answer

Same problem with a HP PC at least 5 or 6 years old, the green light blinks but the PC doesn't turn on. No beeping, the fan doesn't start. Believe it or not, but the hairdryer technique works perfectly; after 2 minutes of heating the power supply, the light stays green and the PC starts up. Thank you for the advice.

hellomoto1 · Answer

Hi, and if you check your cables, I’m talking about the power cable if that works you must have a hardware issue somewhere.

Drynix · Answer

Well, everything is properly connected in the CPU, but the power supply unit is flashing green.

Drynix · Answer

Could it be related to diet??   The UC has been present for 5 years after all.

hellomoto1 · Answer

so the current flows , you don't hear anything when opening , normally you should hear beeps

getrare · Answer

Hello the power supply unit for what, the PC or the modem?

Drynix · Answer

yeah, like beeps

Drynix · Answer

What should I do?

Drynix · Answer

power supply unit of the PC

Drynix · Answer

Que me conseillez-vous de faire ?

hellomoto1 · Answer

there, it's a little clearer, what is certain is that your problem comes from one of its components: memory, graphics, or processor, and the most likely cause is the memory stick; anyway, you would do better to check these components, and I advise you to start with the memory stick, you can move it to the other memory PCI slot, for example.

Drynix · Answer

already done, I removed it little by little  Could it come from the diet??

hellomoto1 · Answer

The current is flowing, plus your fan is running, so it shouldn't be a power issue. Also, you hear beeping, so the problem must come from one of those components above because when the system is triggered, there will be a check of these components, so in case of failure, we hear these beeps.

Drynix · Answer

nn my fan doesn't work

Drynix · Answer

my computer won't turn on at all

Drynix · Answer

so ???

hellomoto1 · Answer

I thought your PC would turn on at startup, but it shows nothing; I misunderstood your problem.
Now you are absolutely right, it must be a power issue........but there are some things to check. You say you hear beeping sounds; these beeps can only be generated by the BIOS, and if that were the case, it brings us back to square one because it means that power is reaching the motherboard. You need to check now if the motherboard is receiving power or not; you should look for components that are flashing inside it.

Drynix · Answer

no, not really, it's not a sound beep, if you want it's the beeps from the diode behind, it emits a little sound.

Railbird · Answer

In this kind of situation, it's often the processor that is faulty.

hellomoto1 · Answer

so your problem comes from the power supply. that's for sure   it seems the only explanation is that the little cables coming out of the box and leading to the motherboard's ATX port are disconnected somewhere. I don't know if this problem is fixable or not, it requires someone a bit more expert to assess that.

hellomoto1 · Answer

Hi Railbird, I just wanted to tell you that the processor has nothing to do with it, that's what Drynix told me.

Drynix · Answer

The problem is fixed!!  I plugged in the CPU, waited 5 minutes, and then I pressed the power button again, and like a miracle, the CPU is working again!!  THANK YOU ALL FOR YOUR HELP :)

Léonlechien. · Answer

Here I also have exactly the same problem, thank you for helping me :S

Drynix · Answer

I personally just waited 5 minutes and then it restarted, leave it plugged in and wait.

gherra73600 · Answer

A big thank you to boogye_157 because his solution works very well. I have a Compaq Presario and it wouldn't start one day to the next (I took apart the power supply, etc...) Then nothing, and in fact, you really need to short the wire from the barrette that goes to the motherboard with a black wire (I took the one next to the green one). And it starts up perfectly. Don't listen to those who say the power supply is dead (they don't even try to find solutions). Thanks again, boogye.

vince · Answer

me too, the diode blinks green, nothing else, no beep, it started again after heating the motherboard and the power supply for 5 minutes with a hair dryer!!!

clavida · Answer

On my Compaq Presario, the green power supply light and the green light at the front of the tower started blinking after a power outage. I was able to restart my computer by unplugging the power cable from the motherboard; the light stopped blinking, and then after plugging the cable back in, everything was fine.

phantoom · Answer

I confirm that the hair dryer technique works perfectly. After 2 minutes of heating, the LED turned back to a steady green and the PC restarted. Thank you for the advice.

NicoNico · Answer

Simply amazing, the hairdryer solution. I heated the power supply for about 1 minute and it restarted!  Thanks to the one who gave this tip!  Best regards.

AIEYABA · Answer

AIE yaba!!! it works the thing with the dried seed chièveveu!!!

GiGi678 · Answer

I just had the same issue after I returned from vacation. The hairdryer also helped me solve the problem. Thank you.

heda · Answer

THANK YOU! And one more! My Presario s4790FR was flickering with the power. A blow dryer (without much hope) and it worked again. Thank you very much for the unlikely tip!

Miracle · Answer

Hello, at the beginning of 2013, I had to fix a PC for a friend's son (it's tough out there). An HP Pavilion wouldn't start, the LED was blinking at the back. So I came here looking for information and came across this post... I thought, why not, let's try the hairdryer trick (sounds crazy!!!). And after 2 minutes... Miracle, it works, it starts. Huge thanks to the tinkerers who found this trick...

Franck · Answer

I confirm that the hair dryer works :-) thank you for this tip

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