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Won't boot up

I replaced the CPU cooling fan and once I reassembled it and tried to power it on, it beeps three times in per session but will not display anything. I have check all of my connections but everything appears to be in order. I'm dealing with a HP pavilion g7.

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  • Contributor
  • 49 Answers

Hi Jeremy if you replaced a notebook/laptop cpu fan make sure that the fan has all the connections properly plugged in. The triple beep usually is an indicator for graphic / video issues but could very well be a sensor issue as well. be sure that the connections don't just look like their are plugged in but also that they are properly seated (especially important with the ribbon connections of keyboards etc).

I hope this helps.
Philipp

Posted on Apr 17, 2014

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Posted on Jan 02, 2017

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  • 324 Answers

SOURCE: Power LED flashes three times-no boot

Try this. Power down. Remove the battery. Remove the memory. Replace the memory. Replace the battery.
Try to power back up.
Best of luck...
R-

Posted on Nov 05, 2007

SOURCE: M35X does not boot up

Its a design problem with the motherboard and where the power plugs into the board. It breaks and you have to buy new board or throw away the laptop.

Posted on Aug 18, 2008

  • 788 Answers

SOURCE: HP laptop display issue

If you are recving 1 long and two short beeps, it is not a memory problem.
It is not a Lid closing or lid switch problem.
If you are able to switch to and from your LCD and Monitor, you are lucky.
I have been up and down the road with several HP DV6000 series units, all have had the 1 long and 2 shot beeps.
HP is aware of this problem and has offered an extended 1 year from date of original warranty expiration. Another words 2 years from date of purchase. HP will ask for $365.00 + or - ? for this repair.
Their repair consists of a motherboard replacement.

If you go to HP's web site, you can look up your model and if in warranty, have it sent back for repair.
The problem will not get better in time but only worsen. The heat sink on the dual core units is not handling the heat transfer properly.
The board is a 2 sided wafer which has displayed failure in several places, due to the heat load and transfer design. Area of problem is directly under NVIDIA chip look for craters. Theses are solder points the size of a pins head which because of the heat and the stress of the transfer bracket above, have separated making in some cases an intermittent connection to chip.
The best thing to do is have a technician remove the board from inspection and blow out the heat sink and surrounding areas.
Apply new heat sink tape and grease where needed and re-assemble.

You must update your BIOS ver. to current.
This new version will address the Voltage and Fan Control Speeds in a better manor.
If your unit is just now giving you these errors, now is the time to act.
Just like in a A/C unit at home, a restricted air flow will make unit run longer and hotter.
Their are no filters here, once lint and dust have collected in the coils, it is just a matter of time.
Hope this helps you in your problems.
Anybody reading this note having a DV6000 series unit, should check at their web site for warranty and call back issues.
John
john@johnrraycomputer.com
P.S. if you are a technician and feel you want to repair the board yourself, drop me an email with the model number and I will explain in more detail.

Posted on Jun 11, 2009

dilum_wonder
  • 59 Answers

SOURCE: Beep Codes for Troubleshooting HP Pavilion ze4125

remove and clean your RAM cards. use some contact cleaner with cotton wool to clean it. reinstall and try it. 

Posted on Jul 20, 2009

nicoleFIXIT
  • 154 Answers

SOURCE: HP Pavilion dv6636nr boot problem

When we talk about laptop won't boot up it is a hardware failure.

First of all, most of the hardware failures that are going to be presented in this article require you to disassemble the laptop and work on its internal components. Because of this, you need the required components to take the laptop apart (such as screwdrivers, etc.) and space, lots of space. If you don't have a workbench, then working on that large table in the living room should do it.

Second of all, you need to be extra careful about ESD (electrostatic discharge). Sure, this is important when working with a desktop system too, but you really shouldn't consider this as some sort of overreaction or waste of time. A few anti-static conductive bags should suffice. These are going to be useful when you take apart components from the laptop and you need a safe place to put them down.

If the laptop does not power on using the batteries, then try to power it using the AC adapter. Pay attention and see whether the LED on the laptop lights up, signaling that the adapter was detected. If yes, then your power jack works. If the notebook still does not power on, disassemble the laptop and remove the batteries. Look first for the CMOS battery and take it out.

Your best bet is that the problem is memory-related. What you need to do is re-seat the memory modules. If there are more than one, then try swapping them between each other and try different slots. Try booting again. If it does not work, then try running with only one module - this way, you can tell whether one is faulty.

Disassemble the laptop and remove the HDD, CD/DVD drives, and the modem and/or wireless card(s). If possible, take out the sound card module (if separate). To minimize the possible causes, you may disconnect the LCD panel as well. Try running this way. If it does boot, then try connecting each connector one at a time, booting up in between to localize the problem.

Good luck and take time to do a hard troubleshooting this trouble is not easy as well. You need to be care full in removing the some parts so that the other will not affected and being damaged.

Posted on Dec 02, 2009

Testimonial: "thanks! i was not waiting long enough before replacing the cmos battery back in its slot. after a ten minute wait, it did the trick. you rock."

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