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No display, no boot

post #1 of 6
4/3/11 at 10:19am
Thread Starter 

Hi everyone,

 

I posted this problem, no video no post, with my dv4 in the HP forum. Other people added to it--we are describing the same thing, but no one has put forth an answer or suggestion.  Hoping for help here.

 

What follows is that post and the replies.

 

Please help.

 

thanks, Bob

no display no boot

04-02-2011 02:47 PM

Pavilion dv4-2040us, Win 7 64 bit.

 

I usually run firefox as my browser but decided to try another.

While using the new browser, I ran into the program "clearvirus" which told me I had a trojan & had to immediately download their program to clear the trojan.

 

On FF, along with help from K9 and some plugins to keep these things from killing my system, I just close such a popup, but in this browser I couldn't get out.

The choice was to either hard shut-down or load their stupid program. I decided to load their program then escape and delete it.

 

Instead, after loading it automatically ran. I couldn't tell if it did anything or not. But the background on my desktop turned white, leaving the shortcuts visible.

 

I opened and ran my antivirus, Avast. It came up clean. So I shut down for a restart.

 

Upon restart I heard the fan come on, usually my USB mouse lights as it powers on and I see the computer lights that show HDD activity go on as the OS is loaded. Neither showed any activity. 

 

The lights that do show are where the AC is connected, the wireless light which is now red (showing there is no connection to my network), the HP logo on the front of the system, and the computer light which shows the system is powered on.

 

The optical drive works==at least the door opens/closes and inserting a boot CD, I could here it whir.

I tried rebooting with that CD and could here it being accessed, but still there is no display. The screen is black.

 

The system acts like it is in some freaky sleep/suspend mode.

Both the caps lock and scroll lights flash on/off for one second, every three seconds.

 

Anyone have any ideas?  Willing to work with me to figure out what's happened and how to fix it?

 

Thanks,

 Bob

Re: no display no boot


Hey bob
I'm also having the same problem.
My laptop refused to boot up on my battery few weeks back and for the last few days I got hardware based bsod while using my laptop and then today it's refusing to boot up. The screen is blank as if ts in sleep mode even though my DVD drive tray was working. The hp logo glows and they caps lock and num lock indicators blink on and off.

Re: no display no boot

I have a similar problem, it seems to have happened after updating the bios-using HP detect DV9009cl notebook (appeared to ID it correct), sent to page to download SP48125 bios for AMD processors 9which this has), appeared to run correctly (although it wrote to the 1st block, skipped the next 15 or so, and wrote the last 16 or 17 blocks), now it comwa on, panel. power light, trackpad, quickplay  lights comes\ on, fan starts, goes low, I hear optical drive seek twice, and it powers off after another 12 seconds or so and starts back up.it then keeps repeating this cycle until I pull power from it or hold the power button for 4-5 seconds to power it off.

It also never turns on the HDD light or display backlight. It just occured ot me I should try hooking up an external monitor and see if it shows anything. I suspect it won't.

Anyone have any suggestions? It seems like the BIOS update just killed my laptop. (currently typing on a different one)

Thanks Scott R 


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Re: no display no boot

04-03-2011 09:02 AM

Thanks for the xtra input.  What's described is exactly the same thing I am experiencing. Maybe my running into the viurs was just coincidence. Anyway, our problems are the same, now, who can help us?

 

So out there in HP land.  HELP!  Is the mobo trashed? If so, why?  But better:

Anyone have an answer or even ideas of things to try for a fix?

 

Thanks,

Bob et al

 

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post #2 of 6
4/3/11 at 1:12pm
Hooking up and external and try booting from an installation CD is that what I would try first. But if this was the issue after a BIOS update then you are really having a problem.

cheers ...
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post #3 of 6
4/3/11 at 5:17pm
Thread Starter 

with my system, I did not do any update to the BIOS.  Nothing was done but run the stupid "clearvirus" program, since the browser I was using wouldn't let me escape. --wish I had stuck with firefox-- then ran Avast anti-virus; but the condition of the computer as described by others, even with the caps on / and scroll light flashing are exactly the same as what I am experiencing.

 

I have lights that show power, the HDD status (no HDD activity is happening), all the things going on that others describe.

 

However, I made no attempt to update anything--other than run Avast to check for a trojan/virus--which it said the system is clean.

 

Except == it's so clean there is no display whatsoever.  Nor any beeps. The fan is running. I have optical drive access. but a boot from the CD failed (at least I think it did since I couldn't see anything on the screen except black)

 

I just plugged in an external monitor. It says there is "no signal."

 

Since the wireless connections is showing red (orange), indicating it is not working, I made a direct connect to the router.

The router shows that the connection is made--at least plugged in. 

But there is no signal to the network. No computer on the network can see the laptop.

 

As I mentioned in my original post, it acts as if it is asleep.  Could the video have gone out or the EPROM erased?

With three other people experiencing the exact same problem and all the systems responding in the same manner, something funky must have happened.

 

Please, more help?

 

Thanks, Bob

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post #4 of 6
4/4/11 at 6:47am
Strange coincidence. Let us try the followings:

- remove the battery
- remove the ram modules
- remove the hard drive
- re-seat them

and pray.

cheers ...
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post #5 of 6
4/10/11 at 9:13am
Unplug mains, remove battery and hold power switch down for about 10 seconds, plug in mains and see if it POST's....
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post #6 of 6
4/18/11 at 11:00pm
I agree with qhn this is classic corrupt bios

try what mr t suggested but most likely you will probably have to send it to HP to fix this one.
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