Computer wont turn on, blinking light.

**Flagg** · 06-06-2011, 07:01 AM

So I go to turn on my computer this morning and nothing. Just a flashing light on the power button. I've taken out the adaptor, tried a different one and still the same thing. Took the side panel off to have a look inside, as far as I can see there is a green light constantly on, on the motherboard so I don't think its a problem with that, however when it comes to computer hardware stuff im a total novice. I'm not sure if this is a power supply problem or not? I'm on a library comp at the moment, but a few results have suggested that my power supply switch could be at fault? I don't want to take this into some herbert who will charge me a fortune to "repair" when it could be a minor problem. Everything else seems fine, monitor, speakers, all power there...just the computer will not turn on and it was completely fine last night.

Any suggestions fellas? I have a Dell H305PP-00 if that's of any relevance.

**Necrosaro** · 06-06-2011, 10:06 AM

I also think it is the power supply. Most power supplies are relatively easy to replace but if it is in a dell it might require a bit more work since they like to make things tougher. Did you try unplugging the power cord from the back and pressing the power button a few times then plugging it back in and trying again?

**DizzKid** · 06-16-2011, 03:29 PM

Did you ever fix this problem?

Does anything happen when you push the button? Does it seem as if something is physically wrong with the button? Pull the front of the case apart enough to expose the button mechanism, does the switch seem to be functioning properly? Check the back side of the button, is anything loose ... is there a random wire dangling? Trace the wires from the back of the switch to the mb (mother board), are they secured into the board?

If you still believe it to be the power supply, try pulling the PSU (power supply unit) out. I know at first it may seem a little intimidating but, just make a mental note of where everything was unplugged. You could even take pictures of where everything is plugged in. Once you get it unscrewed and unplugged, take the grill over the fan off (if you can). Does the fan spin freely? 99% of the PSU I have seen DOA have busted fans. Sometimes you can get away with simply replacing the fan, sometimes you can't.

If you post a few more details, I may be able to help you a little. I know a little about puters.

**DizzKid** · 06-16-2011, 03:30 PM

Originally Posted by Necrosaro

I also think it is the power supply. Most power supplies are relatively easy to replace but if it is in a dell it might require a bit more work since they like to make things tougher. Did you try unplugging the power cord from the back and pressing the power button a few times then plugging it back in and trying again?

I didn't even think about the switch on the back of the computer LMAO Check to make sure it's not that FIRST HAHAHAHA

**PitMaster** · 07-29-2011, 02:16 AM

Originally Posted by Flagg

So I go to turn on my computer this morning and nothing. Just a flashing light on the power button. I've taken out the adaptor, tried a different one and still the same thing. Took the side panel off to have a look inside, as far as I can see there is a green light constantly on, on the motherboard so I don't think its a problem with that, however when it comes to computer hardware stuff im a total novice. I'm not sure if this is a power supply problem or not? I'm on a library comp at the moment, but a few results have suggested that my power supply switch could be at fault? I don't want to take this into some herbert who will charge me a fortune to "repair" when it could be a minor problem. Everything else seems fine, monitor, speakers, all power there...just the computer will not turn on and it was completely fine last night.

Any suggestions fellas? I have a Dell H305PP-00 if that's of any relevance.

I'm late reading this, but what do u mean by adaptor?
If your still having problems or have already taken out your powersupply, I can help walk u through on testing it out of the case.

**mario_ps2** · 09-18-2011, 04:09 PM

it may also me the video graphic card... but it seems that it's most probable the power supply. just replace it with another working video card or power supply...

**Scabtree** · 10-20-2011, 08:03 AM

I had a dell computer which did the exact same thing, and it was the power supply. Dell wanted a small fortune for a new one, as well it would take a few weeks to arrive. So I bought a cheap computer case with power supply, and transferred all of the hardware to it. It was inexpensive, and works great.

**Shol'va** · 10-20-2011, 05:17 PM

I was going to respond till I saw Flagg posted this in June so he is way past his problem. But anyone else take note. If this ever happens to you and your unsure what the problem might be and the light on the motherboard is on. Unplug the computer and temporarily remove your video card. Plug the computer back in and if it starts up then unplug it immediately again. this indicates your video card went out. this is what happened to mine. The video card died and wouldn't let the computer start up. Once I ran this simple test and replaced it with a new video card all is well again. My video card had a built in cooling fan on the card itself and it had quit working.