HP pavilion 5460: all lights(LED) on, does not boot, no video, but cdrom makes noises
 

Hi All,
I ask for advice because I've tried all my best:
The HP pavilion 5460, when power button pressed all lights (LEDs) go AND STAY on, but laptop does not boot, nothing comes on video, neither LCD nor external monitor, but DVD drive makes periodic noises, like getting requested by the MB.
I tried to set different memory, tried to disconnect devices (now it just a bare motherboard hung up to external monitor) - nothing helps.
I'd appreciate any clue.

Re: HP pavilion 5460: all lights(LED) on, does not boot, no video, but cdrom makes noises
 

Sorry I dunno what to advice.... My HP pavillion is in identical state... I wonder if it is faulty BIOS... Because all the lights go on and nothing comes on the screen...

HP? NEVER AGAIN! The laptop is not a year old, but out of warranty!

Re: HP pavilion 5460: all lights(LED) on, does not boot, no video, but cdrom makes noises
 

Let's say it's a BIOS.
How then to fix it?

Re: HP pavilion 5460: all lights(LED) on, does not boot, no video, but cdrom makes noises
 

If it is faulty BIOS then we willhave to replace the motherboard! :'(

Re: HP pavilion 5460: all lights(LED) on, does not boot, no video, but cdrom makes noises
 

Maybe not. I know that, couple of years ago, it was possible to order replaceable BIOS chip directly from Award, but I'm not so sure that it is still the case.

Yo should browse through thiese pages to see if you find something useful.

Also, there is a possibility of faulty adapter/PSU.

Re: HP pavilion 5460: all lights(LED) on, does not boot, no video, but cdrom makes noises
 

Faulty PSU even though fan is working fine and lights are on?
How to check this reason if it's really power problem?
Honestly, I don't believe the BIOS is a reason. How it would go wrong all the sudden? I'm pretty sure the user who used this laptop did not try to play with BIOS.

Re: HP pavilion 5460: all lights(LED) on, does not boot, no video, but cdrom makes noises
 

PSU provides number of voltages: 12V and 5V for the peripherals LED lights, fans and so, 2-3V for the memory, 1.5V for the CPU core... and that is what I can give you from the top of my head (there are more). If you take out one of those voltages, you would get similar situation. Problem with laptop's, in some cases, the PSU is partly or fully integrated with the motherboard, so if it gives, you would have to replace the motherboard, or manage to find PSU that is intact (next to impossible) and have some electrician replace it for you, since it takes considerable soldering skills. In such case, you might want to consider chipping in some more $$$ and get a new (or 2nd hand and working) laptop, since the motherboards for laptops are only available at the laptop manufacturer, and since they charge you for it way too much.


BTW, only two ways to be sure if the PSU is to blame are:
- to have working PSU for the comparison or
- to have an expert analyze the problem.

Re: HP pavilion 5460: all lights(LED) on, does not boot, no video, but cdrom makes no
 

Hi There!
I have a Hp Pavilion dv2315nr and i have the same problem...
It came on 2 months ago.. but before after some tries it finally started . And i always needed to do several tries to get it on.. well not this morning... anything i do it just stays on (with leds,dvd drive giving sounds and ofc no display) was this problem solved?

Or anyone knows the solution atm?

Re: HP pavilion 5460: all lights(LED) on, does not boot, no video, but cdrom makes no
 

I sent my to HP and they replaced the motherboard for free under extended warranty...


So send yours in if you can.....

Best of luck!

Re: HP pavilion 5460: all lights(LED) on, does not boot, no video, but cdrom makes no
 

My daughter has one of these laptops in the same state. A few more clues: The fan starts to come on for a fraction of a second, and then shuts off. Sounds like a short-circuit? I tried re-seating the DRAM and removing the HDD and battery. Could be a defective lid switch?

I'm not ready to take the whole thing apart. It's out of warranty, but I took it to the geek squad at Best Buy. They'll send it in to check for $30. If I can fix for < $110 I will. Otherwise I'll strip it for parts.

A quick check on ebay shows none of these models for sale, but lots of parts--batteries, hinges, RAM, HDD, power cords. This doesn't look good...