Laptop won't power up. lights and fan starts then quits.

HP Compaq MX 9420. Refuses to power up. Lights and fan starts, but then cuts off before boot up process begins. Won't let me do "Hard Reset". What do I do?

Hi JediMaster47,
Welcome to the HP Forums!
I would like to take a moment and thank you for using the forum, it is a great place to find answers. For you to have the best experience in the HP forum, I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I grasp that the notebook powers up and you hear the fan and see lights, but it does not boot into Windows. Here is a link to Troubleshooting Black Screen Displays with No Error Messages During Startup or Boot to assist you.
If this has not helped, I suggest calling HP support for assistance.
Please call HP technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region. HP Technical Support Sitemap
Sparkles1
I work on behalf of HP
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Hello tianhuat. I understand you're having some problems getting your notebook to power up. Try the following.
Remove the battery and AC power from the notebook.
Press and hold the power button for 20-30 seconds. This discharges the capacitors on the motherboard.
Replace battery and AC power.
Try to boot the notebook and post the result.
Are you also getting a blinking CAPS LOCK or NUM LOCK pattern?
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Click the "Accept as Solution" button if I resolve your issue.

Laptop won't boot caps light and Num light blink

My Ts2-1375dx won't boot after I have shut it off and turned it back on. I get the cap & num lock lights blinking once. I remove the powercord, battery and all attached peripherals, hold the on button for 30 seconds reconnect the power and try booting again. Although this works (maybe after 1-3 tries) I don't believe that this is the way you should have to boot the computer. I also see lots of the same problem with the solution being the method I use. WHY IS THERE NO PERMANT FIX?!?!
This question was solved.
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Please try understanding the root cause for the issue by understanding the LED blink codes from the following weblink:
HP Notebook PCs - Computer Does Not Start and the LEDs Blink or the Computer Beeps
Provides procedures for resolving problems identified with blink codes or beep codes during startup
I am an HP employee.
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My mac mini only shows a steady power light and fan noise when powered up. No video or sound and no commumication with wired keyboard or optical mouse. Tried replacing internal battery and resetting PMU/SMC but nothing seemed to happen. Any suggestions?

My mac mini only shows a steady power light and fan noise when powered up. No video or sound and no commumication with wired keyboard or optical mouse. Tried replacing internal battery and resetting PMU/SMC but nothing seemed to happen. Any suggestions? Many thanks! Richard

You've already done the two things I would have suggested.
If your Mini has an internal battery then I assume it's a G4. That means you've gotten a lot of good years of service from it, and it's old enough that it's certainly not covered by AppleCare anymore, and it's probably not worth spending money trying to repair it.
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I hope someone has another suggestion for you.

Familiar Story - tx2000 - lights and fan on, but black screen at boot up

I've been reading around that there's a common problem with the 1000 series of tablets. After 1 1/2 years, the sucker gets a black screen at boot up, yet the lights are on.
Well, almost a week to my tx2000's 1 1/2 year date (and now out of warranty), I tried to take my tablet out of hibernation. The screen was black yet the lights were on and I could hear the fan.
I tried basic troubleshooting with the online tech, but to no avail. It doesn't work, and they tell me it'll cost about $400 for it to be picked up and repaired. Anybody got a viable solution, or do I just need to go ahead and start saving for a Mac?
Thanks HP for reselling such faulty merchandise.
http://www.mycheaplaptop.net/2009/03/never-buy-hp-laptop/

So this most likely does not apply to the tx1000 problem, but I believe the tx2000 recent problem is not related.
For those getting lights and fan on.. or perhaps on for a second or so but no boot screen or logo it maybe related to your video card driver.
Sounds crazy right? Well your video card driver controls how your computer goes into hibernation and sleep. If the drivers are incorrect the system may not handle this process correctly when you try to reboot it.
I'm not certain on how to get the system to boot up again, but I've done it quite a few times while trying to revive the machine.. pulled the battery.. the ram.. held the power button.. lots of cussing.. the solution seemed different each time, but eventually if you can get back into windows you'll find that either by not using hibernation/sleep or by loading the original video card drivers from the hp site, you'll avoid this problem again.
This problem started occurring for me after microsoft made available a driver update on windows update this past summer.. then suddenly everyone started having issues at the exact same time.. I've seen it blamed on simultaneous heat issues around the world caused by exactly 1 year and 2 months of dust collection on every tx2000 laptop... however I'm quite certain it's the new video drivers in combination with hibernation/sleep.
But don't take my word for it. For more information on how video drivers can affect the boot process check this site: http://articles.techrepublic.com.com/5100-10878_11-1046825.html

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@BayOceanLake
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Started loading mavericks on my laptop, won't load the system and cancels out at 49%. Can you help

All I can suggest is to reinstall Windows, see link below on how to order recovery media for your model. You will have to reinstall Ubuntu after using the recovery media so back up your files to an external drive. You can order HP recovery media below, or call HP on the phone to order 1-800-474-6836
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Here is the thing.
1) the laptop doesn't power on without a battery when directly connected to ac adapter.
2) the light which would indicate that the laptop is plugged into the ac adapter is not on when the ac adapter is plugged in.
3) the battery charge light is also not on, which would indicate the battery is being charged.
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Hi ,
Thank you for visiting the HP Support Forums and Welcome. It is a great site for information and questions. I have looked into your issue about your HP Pavilion g6-2004tx Notebook and issues with the battery not charging. Here is a link to calibrate and test the Battery. Calibration should eliminate this issue. Plug the power adapter directly into a functioning wall outlet. Do not plug it into a power strip, surge protector, or secondary power source as this could cause and issue.HP Battery Check in HP System Diagnostics for Windows 8, would give you details of charging and discharging.Testing and Calibrating the battery using HP System Diagnostics in Windows 8. At the starting of the Notebook, Press F2 to select F2 System Diagnostics. Then choose Component Tests, then battery. If the battery was purchased from HP it could be in warranty. Here is a link to check. If purchased from another source you would have to contact them. Hope this helps. Thanks.

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This laptop (model dv6-3143us) was working fine... and now suddenly won't power on. However, with the (fully charged) battery inserted, the LCD screen is on - blank, but very definitely on, even though the rest of the computer is not.
I removed the battery, tried a hard reset, swapped the AC adapter with a known good one. The tiny LED next to the power input jack does not come on. Pressing the power button - nothing happens. The AC adapter's LED is lit, and it will power another identical laptop.
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Jon-o-groats,
Sorry to hear that, if you decide to go ahead and get the computer repaired, here is the service and maintenance guide for your computer. On page 91 it shows you a list of the motherboards that should work for this particular computer, next to each board there is a part number that will allow you to search for online for comparisons and prices.
Please respond back at your earliest convenience.
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Dv7-6165US laptop won't power on

Just for information, I have taken apart, and replaced many motherboards in laptops, laptop screens, processors, heat sinks and fans. This is the first time with a quad-core and have came across this before. I have reballed alot of HP dv6000 and DV 9000 systems and have got them back up and running.
Specs for the laptop will follow discription of problem.
What I have is a HP DV7-6165US laptop which will not boot at all which is a friend of mine laptop. I believe the battery to be dead and it does not charge when plugged in. The only light that lughts when the ac adapter is plugged in is the light right on the side where the ac adapter does plug in, usually that light stays on steady when plugged in-- on this one it constantly flashes. Nothing lights up on the laptop itself when trying to power it on, the light where the adapter plugs in on the side just keeps flashing, it shows no other life at all.
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Product Number LW460UA#ABA
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AMD Radeon HD 6750M s Switchable graphics
640GB (5400RPM)
SuperMulti DVD Burner
17.3” diagonal High Definition+ HP BrightView LED Display (1600 x 900)
Network Card Integrated 10/100/1000 Gigabit Ethernet LAN Wireless Connectivity •802.11b/g/n WLAN
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Weight 6.65 lbs
Security •Kensington MicroSaver lock slot • Power-on password • Accepts 3rd party security lock devices
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What's In The Box HP TrueVision HD Webcam with integrated digital microphone
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I am fully aware of which light you are referring to.
The document I linked to covers the flashing charger light on the notebook. In fact, nothing on the document references the light on the notebook. I apologize that my statement was not as clear as it should have been.
I highly doubt it is the motherboard or processor at this point.
Again, let me know if you have reviewed the document and tried the steps listed in the document for a continuously flashing charger light.
You have also replaced every other possible component meaning you would have been shipped a faulty component. While this is possible, I doubt it is the case. If they listed it as working, then they are held to that in most countries.
The document lists power adapter, but that is only the component being tested and not what is being referenced. It is essentially the notebooks way of saying "Hey, I'm not getting enough power".
AC power adapter LED
Continuous blinking
Power adapter
Insufficient power
Try a different power outlet.
Replace power adapter.
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My laptop won't power on

My son accident dropped my laptop yesterday. Up until that point over never had a problem with it ever. Now it won't power on. I've tried the trick of taking out the battery unplugging it and then trying to power it on and still nothing. It's completely charged. The light comes on when it's plugged in. I have important files on my laptop so I need it to work again is there anything I can try?

At this point I would suggest pulling the hard drive. Insert it into a USB HDD Enclosure, plug into usb port of a working machine. If the hard drive is undamaged you should be able to browse it and copy important files over to hard drive of host machine.
Example:
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3195233&CatId=2781
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I have an HP 2000 that won't power up. When you press the power button, the light on the wireless/F12 button comes on, the the light on the caps lock button comes on and blinks serveral times. after that, the system shuts down. Tried removing the battery and holding the power button for 30 seconds and retry startup, but no good. The warranty expired 10/25/12.
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Thanks for all the tips on trying to determine the problem.
I get 6 flashes on the CAP lock key and then it shut down. Here is what the code chart says.
The BIOS authentication error (Blink code 6) is extremely rare. It is the result of a discrepancy between the BIOS and the hardware that is installed on the computer. This error occurs when the BIOS cannot authenticate signatures from the hardware on the system. The purpose of the BIOS authentication is to be sure that no one has tampered with the BIOS on the computer.
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Windows does not fully shutdown--case lights and fans remain on

Hi all.
My computer (Win 7 64-bit) is not shutting down properly. When I click "Shut Down," Windows appears to carry out the shut down process, and the display then goes blank. But power to
my case persists; fans and LED lights remain on. I have no idea if this is even a hardware (motherboard, power supply, conflict) issue or software issue (OS, BIOS, etc). Any ideas how I can pinpoint/troubleshoot the problem?
I tried booting into safe mode and shutting down from there, but after a couple seconds the process then froze on the Windows Shut Down screen.
My system specs are:
Motherboard: Gigabyte GA-P67A-UD3R-B3 (rev 1.x) (latest version of BIOS is installed)
BIOS: Latest for my motherboard (F9 I believe)
Processor: Intel Core i7
Memory: 8 GB DD3-1600 (4 x Kingston KHX1600C9D3K2)
Hard Drive: Western Digital Caviar Blue 1TB WD10EZEX (brand new)
Power supply: 700W Stronger SPSN-070P
GPU: Radeon 6850
This is a fresh Windows install, and all Windows updates are up-to-date
Thanks in advance.

OK below my event logs for the shutdown process, from 2 different systems: the system with the shutdown issue (system 1) and a system with working shutdown (system 2). The broken system reports 1 error during shutdown:
The Superfetch service terminated with service-specific error The operation completed successfully..
I can share the details from the event viewer if you'd like, but it's a lot of gibberish. The most interesting would be:
[Name] Service Control Manager
[ Guid] {555908d1-a6d7-4695-8e1e-26931d2012f4
Unfortunately they are not identical systems They are both running Win 7 32 bit, but the broken system (system 1) has no Windows Updates and no extra software installed. The working system is up to date with Win updates, and has some more software
installed. I also have event log (*.evtx) files of each shutdown process, showing details.
Here are the full logs:
System 1: Broken shutdown
Information 1/20/2015 7:33:15 PM
Microsoft-Windows-Kernel-General
13 None
The operating system is shutting down at system time ‎2015‎-‎01‎-‎20T12:33:15.375698400Z.
Information 1/20/2015 7:33:11 PM
Microsoft-Windows-Kernel-Power
109 (103)
The kernel power manager has initiated a shutdown transition.
Information 1/20/2015 7:33:11 PM
Service Control Manager
7036 None
The Windows Search service entered the stopped state.
Information 1/20/2015 7:33:10 PM
Service Control Manager
7036 None
The Plug and Play service entered the stopped state.
Information 1/20/2015 7:33:10 PM
Microsoft-Windows-UserPnp
20010 (7010)
"One or more of the Plug and Play service's subsystems has changed state.
PlugPlay install subsystem enabled: 'false'
PlugPlay caching subsystem enabled: 'false'
Information 1/20/2015 7:33:10 PM
Service Control Manager
7036 None
The Cryptographic Services service entered the stopped state.
Information 1/20/2015 7:33:10 PM
Service Control Manager
7036 None
The Windows Management Instrumentation service entered the stopped state.
Information 1/20/2015 7:33:10 PM
Service Control Manager
7036 None
The Software Protection service entered the stopped state.
Information 1/20/2015 7:33:10 PM
Service Control Manager
7036 None
The Distributed Link Tracking Client service entered the stopped state.
Information 1/20/2015 7:33:10 PM
Service Control Manager
7036 None
The Desktop Window Manager Session Manager service entered the stopped state.
Error 1/20/2015 7:33:10 PM
Service Control Manager
7024 None
The Superfetch service terminated with service-specific error The operation completed successfully..
Information 1/20/2015 7:33:10 PM
Service Control Manager
7036 None
The Superfetch service entered the stopped state.
Information 1/20/2015 7:33:10 PM
Service Control Manager
7036 None
The Diagnostic Policy Service service entered the stopped state.
Information 1/20/2015 7:33:10 PM
Service Control Manager
7036 None
The Windows Event Log service entered the stopped state.
Information 1/20/2015 7:34:11 PM
EventLog 6013
None The system uptime is 10 seconds.
Information 1/20/2015 7:33:09 PM
Service Control Manager
7036 None
The Diagnostic Service Host service entered the stopped state.
Information 1/20/2015 7:34:11 PM
EventLog 6005
None The Event log service was started.
Information 1/20/2015 7:33:09 PM
Service Control Manager
7036 None
The User Profile Service service entered the stopped state.
Information 1/20/2015 7:34:11 PM
EventLog 6009
None Microsoft (R) Windows (R) 6.01. 7600 Multiprocessor Free.
Information 1/20/2015 7:33:09 PM
Service Control Manager
7036 None
The DHCP Client service entered the stopped state.
Information 1/20/2015 7:33:09 PM
Service Control Manager
7036 None
The Power service entered the stopped state.
Information 1/20/2015 7:33:09 PM
Service Control Manager
7036 None
The Human Interface Device Access service entered the stopped state.
Information 1/20/2015 7:33:09 PM
Service Control Manager
7036 None
The Diagnostic System Host service entered the stopped state.
Information 1/20/2015 7:33:09 PM
Microsoft-Windows-Dhcp-Client
50037 Service State Event
DHCPv4 client service is stopped. ShutDown Flag value is 1
Information 1/20/2015 7:33:09 PM
Microsoft-Windows-DHCPv6-Client
51047 Service State Event
DHCPv6 client service is stopped. ShutDown Flag value is 1
Information 1/20/2015 7:33:09 PM
Service Control Manager
7036 None
The Group Policy Client service entered the stopped state.
Information 1/20/2015 7:33:09 PM
Microsoft-Windows-Winlogon
7002 (1102)
User Logoff Notification for Customer Experience Improvement Program
Information 1/20/2015 7:33:09 PM
EventLog 6006
None The Event log service was stopped.
Information 1/20/2015 7:33:09 PM
USER32 1074
None "The process C:\Windows\system32\winlogon.exe (DUSKWOOD) has initiated the power off of computer DUSKWOOD on behalf of user duskwood\snarl for the
System 2: Working Shutdown
Information 20/01/2015 11:15:29
Microsoft-Windows-FilterManager
6 None
File System Filter 'aswSP' (6.0, ‎2014‎-‎11‎-‎18T16:06:36.000000000Z) has successfully loaded and registered with Filter Manager.
Information 20/01/2015 11:15:27
Microsoft-Windows-FilterManager
6 None
File System Filter 'aswSnx' (6.0, ‎2014‎-‎11‎-‎21T18:16:29.000000000Z) has successfully loaded and registered with Filter Manager.
Information 20/01/2015 11:15:15
Microsoft-Windows-FilterManager
6 None
File System Filter 'FileInfo' (6.1, ‎2009‎-‎07‎-‎14T06:21:51.000000000Z) has successfully loaded and registered with Filter Manager.
Information 20/01/2015 11:15:15
Microsoft-Windows-Kernel-General
12 None
The operating system started at system time ‎2015‎-‎01‎-‎20T04:15:15.375199800Z.
Information 20/01/2015 11:14:17
Microsoft-Windows-Kernel-General
13 None
The operating system is shutting down at system time ‎2015‎-‎01‎-‎20T04:14:17.541276400Z.
Information 20/01/2015 11:14:11
Service Control Manager
7036 None
The Windows Image Acquisition (WIA) service entered the stopped state.
Information 20/01/2015 11:14:11
Microsoft-Windows-Kernel-Power
109 (103)
The kernel power manager has initiated a shutdown transition.
Information 20/01/2015 11:14:08
Service Control Manager
7036 None
The Windows Search service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Intel(R) Management and Security Application Local Management Service service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The avast! Antivirus service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Superfetch service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Volume Shadow Copy service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Windows Modules Installer service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Windows Font Cache Service service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The IKE and AuthIP IPsec Keying Modules service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Cryptographic Services service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The WLAN AutoConfig service entered the stopped state.
Warning 20/01/2015 11:14:07
Microsoft-Windows-WLAN-AutoConfig
4001 None
"WLAN AutoConfig service has successfully stopped.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Software Protection service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The IPsec Policy Agent service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Windows Defender service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Windows Management Instrumentation service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Windows Event Log service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Microsoft Software Shadow Copy Provider service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Security Center service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Function Discovery Resource Publication service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Extensible Authentication Protocol service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Distributed Link Tracking Client service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Intel(R) Management and Security Application User Notification Service service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Desktop Window Manager Session Manager service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Office Software Protection Platform service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The User Profile Service service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Plug and Play service entered the stopped state.
Information 20/01/2015 11:14:07
Microsoft-Windows-UserPnp
20010 (7010)
"One or more of the Plug and Play service's subsystems has changed state.
PlugPlay install subsystem enabled: 'false'
PlugPlay caching subsystem enabled: 'false'
Information 20/01/2015 11:15:50
EventLog 6013
None The system uptime is 35 seconds.
Information 20/01/2015 11:15:50
EventLog 6005
None The Event log service was started.
Information 20/01/2015 11:15:50
EventLog 6009
None Microsoft (R) Windows (R) 6.01. 7601 Service Pack 1 Multiprocessor Free.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Power service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The PDQ Deploy service entered the stopped state.
Information 20/01/2015 11:14:07
Service Control Manager
7036 None
The Human Interface Device Access service entered the stopped state.
Information 20/01/2015 11:14:06
Service Control Manager
7036 None
The Diagnostic Service Host service entered the stopped state.
Information 20/01/2015 11:14:06
Service Control Manager
7036 None
The Diagnostic Policy Service service entered the stopped state.
Information 20/01/2015 11:14:06
Service Control Manager
7036 None
The DHCP Client service entered the stopped state.
Information 20/01/2015 11:14:06
Microsoft-Windows-Dhcp-Client
50037 Service State Event
DHCPv4 client service is stopped. ShutDown Flag value is 1
Information 20/01/2015 11:14:06
Microsoft-Windows-DHCPv6-Client
51047 Service State Event
DHCPv6 client service is stopped. ShutDown Flag value is 1
Information 20/01/2015 11:14:06
Service Control Manager
7036 None
The Diagnostic System Host service entered the stopped state.
Information 20/01/2015 11:14:06
Service Control Manager
7036 None
The Bonjour Service service entered the stopped state.
Information 20/01/2015 11:14:06
Service Control Manager
7036 None
The AMD External Events Utility service entered the stopped state.
Information 20/01/2015 11:14:07
EventLog 6006
None The Event log service was stopped.
Information 20/01/2015 11:14:06
Service Control Manager
7036 None
The Group Policy Client service entered the stopped state.
Information 20/01/2015 11:14:06
Service Control Manager
7036 None
The Windows Update service entered the stopped state.
Information 20/01/2015 11:14:05
Microsoft-Windows-WindowsUpdateClient
27 Windows Update Agent
Automatic Updates is now paused.
Information 20/01/2015 11:14:05
Microsoft-Windows-Winlogon
7002 (1102)
User Logoff Notification for Customer Experience Improvement Program
Information 20/01/2015 11:14:05
USER32 1074
None "The process C:\Windows\system32\winlogon.exe (TEACHER) has initiated the power off of computer TEACHER on behalf of user TEACHER\LENOVO for the following reason: No title for
this reason could be found
Reason Code: 0x500ff
Shutdown Type: power off
Comment: "
Information 20/01/2015 11:14:02
USER32 1074
None "The process Explorer.EXE has initiated the power off of computer TEACHER on behalf of user TEACHER\LENOVO for the following reason: Other (Unplanned)
Reason Code: 0x0
Shutdown Type: power off
Comment: "
Information 20/01/2015 11:13:52
Microsoft-Windows-Eventlog
104 Log clear
The System log file was cleared.

IBook won't power on, but the fan is running top speed

hy,
just got back an iBook from the Apple Store and now it won't turn on..the screen stays black but the fan (at least it sounds like a fan) keeps running quite fast and loud.....any help would be greatly appreciated
neil

sad thing is the logic board was just replaced (within the last week)...not cool
oh well, thanks anyhow, at least we won't spend time waiting for it to power on

Laptop won't power up. lights and fan starts then quits.

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