HP/Compaq :: Pavilion Zd7020us Power Troubleshooting
May 3, 2010
I've been trying to get to the bottom of why this notebook won't power up at all[url].
Here's what's happening:
Got the notebook from a friend, came with no power adapter and no battery. I tried substituting a known good adapter from another laptop, same 19V, a bit less power (90W). I've done this before on other laptops and they'll crank up OK, even if they require a bit more than the adapter is rated for, only for a brief test, as the adapter run hot if left for a long time.
Anyway, when the adapter is plugged in, all the top panel buttons light up for just a moment, then go off, except the power button remains on, and the front lip Power and Plugged In icons stay on. Pressing the power button does nothing, nada, zilch. No fans, hard drive spin-up, blank screen, absolute death silence. The same adapter (non-HP) runs other laptops just fine.
I hate to give up on this one, it's a great older notebook, HUGE screen, two 1 GB sticks on-board, 160 GB hdd, not beat up. But I don't want to dump a bunch of money on it or throw parts at it unless I'm sure of the problem, and if it's worth fixing. I read through HP's troubleshooter section, it doesn't cover this situation or this notebook. Whaddya' think? To get it going, I MAY need a new power adapter, but I'm thinking it's not at fault (eb-Y generic) and a battery. If it turns out to be a zorched mobo, then I'll probably just end up (sob!) scrapping it and pull the RAM sticks and hdd to donate to another machine.
Yesterday, I finished my work and hibernated my computer. When I came back, I could not turn on the computer. It goes automatically to a black screen and after 15 seconds I hear beeping noises. It's one long beep followed by 2 quickly beeps. Rebooting just repeats this process.
I went to the HP troubleshooting page and found this from my symptoms
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It tells me that 3 beeps mean module problems. So i ended up testing both my memory sticks in a different laptop and they were fine. And I tested both individual pavilion memory slots, and still got the same 3 beep black screen on both. iif i was to have no memory sticks in, i still get a black screen but a different set of beeping noises, not sure if a laptop can run without memory sticks, but i figured i check)
Has anyone had a similar beeping noise black screen problem at startup?
i've had this DV6000t (or dv6500) for quite some time. I believe i've had it since 2007, but really started using it a lot from 2009, running almost 24/7.
Here's the situation: I was playing a bit of Starcraft 2, and decided it would be fun to drop a dozen Terrain Ghost Nukes in an area. For those familiar with the game, you may notice a lot of lag when you do that. I didn't know it would lag like that until my computer abruptly shut off on me. Now nothing lights up except for the AC jack. I checked the vents, HDD, RAM, and other spots that may have heated up a lot, but nothing was really running hot. I'm familiar with how hot my laptop can be; the laptop was just 'warm' right after shutdown.
My guess is that I either: -Overheated the laptop, which is what anyone would probably expect since HP Pavilions are well known for this, or... -I may have had a power surge while I was playing.
So, I investigated my opening up my laptop to see if there were any physical damages.
It's hard to see with the blurry picture, but I actually think the chips didn't burn out. But i'm no expert with fried chips......
I've been dealing with this flakey machine for some time. It used to run whenever it wanted, but it had horrible USB performance when it did get to Windows (worked great otherwise). So Im pretty sure it just needs a new mobo, since it finally stopped working. For the past few months the machine would not even get past the Dell screen, no ability to even enter the bios. I did all the normal stuff....swapped ram, HD, optical drive, etc., no luck so I just let it sit for months and tick me off.
So yesterday, just to annoy myself I turned it on. I got in the bios, changed to "restore defaults" state and rebooted. No luck booting up! Tried it this morning and it booted all the way to the Windows driver load screen and did the BSOD. Tried again....no boot.
So all that to ask this. I live in Phoenix and we just had lows in the low 40s (freezing my butt off) My dead laptop suddenly is better than it was this summer, but still not operational. Could this be a temp. thing? I have not pulled the CPU or checked it's thermal pad/ grease. I did replace the bios battery awhile back. Am I just grasping at straws? I do have the svc manual but dont really want to waste anymore time on the POS.
Dell will never get another dime from me. India quoted $500.00 to replace the mobo.
My apologies if this is not the correct place for this thread...
I have a first gen Inspiron 9100 that I have owned for a little over two years now and I am just now having some issues that are cause for confusion. Simply stated my video performance is going down the tubes with a quickness...
especially when playing games or watching video (screen flashes and fans on full blast in seconds). My thoughts were that the video card is going bad but giving it some pause for thought I am not so sure if's that simple.
I have replaced both the Hard Drive and the Power Supply recently and I am wondering if increased heat or inadequate power might be the culprit... or the cause for damage to the video card. Here's my setup for reference...
After replacing the fan, I have a power up issue with the laptop. Basically, the laptop will only power on with the power cable disconnected at the motherboard. It was by mistake that after the fan was replaced and everything was put back together, that I noticed that the battery was not charging.
I then reopened the machine and reconnected the power cable to the motherboard and nothing - no power.
When plugging in the power source with the battery in place, the LED adjacent to the power socket lights up WHITE then stays ORANGE and will not power up. No other lights, no fan noise, nothing.
If I remove the battery, the LED adjacent to the power socket lights up WHITE and stays white however will not power up either. Same agin, no other LEDs, not fan noise, nothing.
I have now opened the machine back up and disconnected the power from the motherboard. Put it all back together and the laptop powers up as normal with the battery and it works fine. (Well until the battery runs out anyway).
I've been given an HP Pavilion G6 laptop that belonged to someone who passed away. It asks for a power-on password, and after three tries I got a System Disabled code of 79308945. Is there a way to change the power-on password? I've read several threads in these forums asking this exact question, and people have been given an individual code to get into their machines.
The laptop won't power on. I've tried it with and without the battery. I've tried it with just the power cord. The light near the power cord lights up. When I press the power button it flashes once there and on the CapsLock key, then goes dark. I've tried removing the battery and power cord, holding down the power button for a minute, then plugging in the power cord. Same result.
I have a HP Pavilion 2000 with windows 8 with the problem "Enter administrator password or Power on Password" pop up After three wrong passwords I get system disable code 76216135
So I know the power on password for my hp pavillion 360 laptop however no matter how many times I change the administrator password by using cmd net user admininistrator when I try and go back and axcesss bios settings it asks for an administrator password. When I try the one I just set three times I get this error code.. 85986809
My HP Pavilion dv9700 laptop died suddenly while I was using it, and I have been unable to get it to power on since. I've tried everything I can think of to bring it back to life. With the battery seated, whether or not the laptop is connected to AC power, pressing the power button causes the Battery LED (lightning bolt) to blink 3 times, and then nothing. Pressing either of the QuickPlay buttons (which would normally power it up) causes the same 3-blink result.If the laptop is connected to AC power, the ring around the power connector lights up. This is the only other response the machine shows to any action.
I've tried a Hard Reset (removing AC and battery, then holding the power button for 30+ seconds), unfortunately nothing changed. I've also reseated the hard drives and memory modules, and tried booting with each of the memory modules alone, in turn. No change. Thinking the problem might be a faulty power adapter (as reported by another dv9700 owner with this problem), I purchased a brand new "HP NOTEBOOK 90W SMART AC ADAPTER" (p/n KG298AA#ABA) and tried using it to power the laptop. No change, still the same 3-blink response when I attempt to turn it on.When I remove the battery completely and attempt to turn the laptop on (connected to AC power), nothing happens at all -- not even the 3-blink response from the Battery LED.
I have a Pavilion G6 that won't start at all when the power button is pushed. I've tried it on battery only, and with the power cord plugged in. Yet nothing.
Here is what I see: When the power cord is plugged in, the power LED next to the port is white. I press the power button and it momentarily flashes white (and the F12 LED flashes). Nothing else happens. No other LEDs lite, and the screen remains black.
DIagnostic steps followed:
1. Battery was removed, and unit unplugged. Power button held for 30 seconds, and plugged back in. Nothing.
2. Battery removed and unit plugged into the wall. Power button pushed and nothing.
3. Tried a different power cord, different battery .. nothing
4. Removed the RAM boards, power button pushed .. nothing
5. Removed the hard drive (RAM still uninstalled), power button pushed .. nothing
I just bought my HP Pavilion 360 less than a month ago and it's only been used for schoolwork and research. No virus or threats were detected. It was working fine today until I had to charge it. When it was fully charged, I turned it on and the screen just froze. I tried shutting it down by pressing the power button but it didn't work. Now, the screen's just black but the power button's lit up (meaning it's turned on). What do I do?
I have a HP Pavilion M6-1045DX laptop and I recently tried to plug it into a display through the Analog RGB and I saw a spark and the laptop shut off. During that time I ran the laptop straight from the AC adapter without a battery because I don't really use it.So the laptop shut off and I tried turning it back on and nothing happened. The charge indicator light turned off even though it was still plugged in. I thought maybe the power adapter stopped working or something but I tested it with a voltmeter and there was still power in it.
So I decided to put the battery in and the laptop was able to turn on, but after a while, this one area that i never felt heat there before was really hot and later smelled like something was burning.But anyway, when it booted up, the screen resolution was really low and was on maximum brightness. When the laptop finished booting, it randomly started installing drivers (such as the WLAN and intel rapid storage) and yeah. Sound doesn't work either. I tried to plug the laptop back in and the battery won't charge.I turned it off and took out the battery and tried running it off from the AC adapter only but the power light was blinking constantly and when I press it, the WiFi button light (F12) turned on for a second and back off. I also hear this high frequency noise that I never heard before somewhere in the laptop.
My laptop wont turn on, whenever I press the power button all the lights light up for about a second, I here the fans turn on and then it shuts off. When I plug the charger in the the charger light blinks, but thats it.
Hp pavilion 15-b129wm asks for administrative password or power on password. After 3x code 71737840 comes up and says system disabled. How do I fix this?
Well I set a power on password on my HP (I think its a Notebook...) and then the next day, I was stupid enough to not write it down, I forgot it.... I've some of my usual passwords and bypass ones for Phoenix, Compaq and AMI Bios but I dont think my BIOS is made by any of them but they are the most likely candidates? anyways... I get this code which I need to provide I know this.... how to bypass the power on pass.I dont want to remove the CMOS battery....
System Disabled code: 55519833
HP Pavilion g6- not sure the model number but I think its 2216a?
The model is a HP Pavilion 15-n278sa. My laptop shuts down randomly when it is clearly completely cool, when it has shutdown, the power button will not respond, and the laptop will flash on, and shutdown immediately if it is moved/picked up/tilted, while it is off.The laptop is increasingly getting more unstable and I'm unable to use it...
I have a major problem with my hp pavilion dv6-3143sa laptop.
I put it to a shop and they told me it was a motherboard/cpu problem and they couldn't source parts. I managed to get the parts. I put the motherboard first, but didn't work. I then added the cpu and put on thermal paste, but still didn't work.
My laptop will power on but I'm still getting a blinking light on the caps lock button and a black screen.
