no power and green light on my hp pavilion is flashing

[giggles99]

We've got an old HP Pavillion a1230n, that I let my kids use for their homework.  Although slow in speed, this computer is just fine for my kids even though it is pretty old.  Today it wouldn't power on.  Thanks to this forum, and the simple hairdryer remedy, my computer is up and running.  I tried toggling the voltage switch, but that didn't work for me.  Although skeptical, I tried the hairdryer method.  The only thing I would add is that you keep using the hairdryer to push air into the PSU until the led light on the back of the PSU is solid green (no longer flashing).  At that point the PC is ready to be turned on.  Believe it.  It works.  

[JMRandMore]

This worked exactly as stated. Saved me a ton of trouble shooting hassle. Many Many Thanks. 

[RiverRVers]

OK I thought I had it fixed with the hairdryer thing but when I turned it off to put it back where it lives, now the green light is flashing again and won't start up.  Re did the hairdryer and it starts.  Do I have to use the blow dryer everytime I want to retstart the pc ?

[malicon]

Same problem: HP Pavilion a1120n - Power outage then green light flashing.
This worked for me after 3 retries. Yes I was scared - Hot plugging a mother board is not normally recommended! But it worked. So a big thank you.

[sharky77]

I can't believe the blow dryer thing actually worked!  Felt like a moron there for the first minute but the the green light came on after two minutes and it works perfectly!  Unbelievable!

[elchavo]

I have the same issue with my HP Pavillion a1230n I used the hair dryer right on the power supply unit, got the steady green light on, the fan started running, computer powered up just like others have indicated here but the only difference is my computer remains powered on for only 30 minutes then it powers off, any suggestions? Please help.

[NHevergreen]

The hair dryer trick worked for me. I'd actually replaced the power supply with an after-market one without a green LED. PC wouldn't power up with the new supply. I put the old supply (with the green LED) back in, used the hair dryer, and was able to power the system up. Without a doubt, this is the strangest hardware fix I've encountered to date!

[jacob_byrne]

What number should i have my pc on 230 or 115

[jacob_byrne]

What number should i have my red part in my pc be 230 or 115

[ZurichCH]

230 or 115?

That's the voltage selector Jacob.

Normally, you shouldn't switch that unless you've moved to a different country.

It'll be 115volts for the US, but 230 for Europe. I'd google your country name and "voltage" if you have any doubts.

There's no harm to place it at 230 volts and plugging in the power cord, but if you have it set to 115 volts and you connect the higher 230 volts power to your PC, you will probably overload and kill your power supply for sure!

If the hair dryer method doesn't work, you can try my suggestion on the first page of this thread.

Good luck!