T400 - Won't Power On, No Lights

Hi all,
I have a T400 from early '09. It's been a fantastic laptop, though I now only use it for when I travel.
Over the last year it's been running very hot, especially when playing games. I've been using a portable fan to cool it down, didn't think about getting it checked out because I didn't use it very often.
Today it froze up and I force shut it down by holding the power key. When it rebooted it ran a disk check (I had a sleep and didn't see the results) and when it loaded windows it was running extremely slowly. After a bit of experimenting I worked out the wifi and switchable graphics drivers weren't working. I was able to get it to a usable state by disabling the discrete graphics in the bios and booting into safe mode.
I was going to reinstll the drivers. While they were downloading I tried to re-enable the discrete graphics (in the bios) and booted. However before I got to the boot manager screen, I got a BSOD (c000021a). I turned the laptop off, but it would not start again. None of the lights on the laptop are working, even though it is plugged in.
The only things I changed in the bios were the switchable graphics (which I changed back to the default setting) and the "beep" on hibernation. I have no idea if the battery has any charge, it should be at 100% as it was plugged in the entire time. I noticed the laptop was running very hot while I was working with it.
Our tech guy seems to think the motherboard may have overheated and "melted', but I will be away for a couple more weeks and he doesn't have any experience with Lenovo computers. So I'm wondering if anyone has experienced this before, or if there are any tricks to getting the laptop booting again (if it isn't a motherboard issue)?
Thanks!

Try the 10-30 routine.
Remove battery and disconnect from AC. Now press the ON button 11 times and on the 11th press hold it in the ON position for 30 seconds. Attach AC and see if it starts.
This issue has plagued old Thinkpads forever. I have not found the true cause other than my speculation of age related.

Similar Messages

G5 won't power on but light is stuck on!

Hi
Today the power in my flat was turned off at the mains after there was a flood in my buildinbg - this happened while my G5 was on. When the power came back on at the mains, I found that the G5 white power light was on at the front, but nothing else happens.
Holding the power button doesn't turn the G5 on or off. It is just stuck with the power light on.
What has happened? Did the mains tripping off blow a fuse or something inside the G5 or is there something I can do to get it to reset? Or is it something worse?
Thanks for your help.

This is truly strange. I'm having the exact same problem. Last night we had a huge lightening storm here, and I powered down the computer, turned off the battery backup, and pulled the plug on the battery backup from the wall socket. After the storm, I reconnected and have exactly the same problem - power light constantly on, but the computer won't power up.
I was looking to start my own thread, but saw this and I guess it makes more sense to join in here. The only difference in artificedesign66's story and mine is that there was no sudden loss of power, everything was shutdown properly. It seemed to be running fine until that point, and did have an APC battery backup/surge protector in place for what that's worth.
I unplugged and replugged a few times last night. When that didn't work, I disconnected everything from the computer (monitor, all usb and firewire, power) and left it that way overnight. This morning I reconnected only the monitor, keyboard/mouse, and power, but still no go.
I do use a third party keyboard that lacks the power button - I use the one on the face of the cpu. Is there any value in digging the apple keyboard out of the basement to try that?
Thanks all for any help and to artificedesign66 for sharing the thread - hope you don't mind.

NX6325 won't power up - battery light flashes 8 times

I have a 3 year old NX6325 that won't power up any more.
It makes no difference whether the charger is plugged in or not.
When I turn it on the battery light flashes 8 times (amber) and that's it. Nothing else happens.
Does anybody know what this means?
Regards,
Julian.

It is very likely your Northbridge chipset is gone.
The CPU could not make connection to the Northbridge to initiate the any data transfer from the Southbridge ( connected to all your low level devices such as Hard Drive, USB ports, Optical Driver and etc ) to fetch the BIOS content to start the POST ( Power On Self Test ) sequence.
It could also mean your CPU could be bad.

Desktop won't power on/Green light will light up a little/fan spins a little?

Trying to help a friend, with an HP computer. Forgot to get the model number. It won't start up, I can momentarily get the green light on the power supply to go on, and the fan runs momentarily. It won't start up.
Would you think it was the power supply or the motherboard? Any Suggestions.
Thanks Bruce

Hello brucefl,
I have read your post on how your friend's computer will not power on, and I would be happy to assist you in this matter!
Since the fan spins a little bit with the green light, I recommend following this document on Computer Does Not Start (Windows 7) or for (Windows 8). This resource should help power on your desktop, or specify if there is a hardware defect attributing to the issue.
For further assistance, I will need to know:
The Product and Model Number of your desktop computer.
The version of Windows you have installed on your computer.
If this is an on-going, or recent issue.
If you have added any new hardware or software recently to your computer.
Please re-post with the results of your troubleshooting, as well as the requested information above. I look forward to your reply!
Regards
MechPilot
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

My macbook pro won't power up. only light green light comes on?

My macbook pro, brought in 2010 won't charge. The green light comes on very faintly.

    Reset SMC.     http://support.apple.com/kb/HT3964
    Choose the method for:
    "Resetting SMC on portables with a battery you should not remove on your own"
   If this does not help, contact Apple.
   Genius Bar reservation
   http://www.apple.com/retail/geniusbar/

T400 won't power up

I have read through the list and tried removing the hdd, and the ram. It beeps without ram, and after removing the little battery it will briefly flash the lenovo screen.
Please help!

got other RAMs you can test with?
*Non Lenovo employee*
I have a Y2P (i5) ... Feel free to ping me if you want me to test some applications with your Y2P if you have the same model. I don't mind keep doing recovery on it if needed .... =)

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
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

TS1587 My friend has a G4 that will NOT turn on at all. The monitor power button will light up, but monitor won't turn on; the the computer power button lights up when pressed but won't stay on and nothing else happens. He said it USED to at least turn

Anyway, not sure if my question was sent, so here it goes: My friend's G4 won't power on....the power button lights up briefly when pressed, but nothing happens....and, cannot even get the montior to power on...does the same thing. He said it used to at least turn on, but now it's doing this. Help!!?? What should we do??

If you are able to use a multi-meter, you can test to see if the power supply is culprit. Use the Power Mac G4: Power Supply Voltage Test (Sawtooth G4) document to aide you in the proceedure.
If not the Sawtooth, Power Mac G4 (Gigabit Ethernet): Power Supply Voltage Test.
If a Quicksilver, use the pinout of the QS PSU connector here:
http://www.xlr8yourmac.com/tips/MDDps_mods/MDD_PSMods.html#update
and a testing description here:
http://www.jcsenterprises.com/Japamacs_Page/Blog/D275729F-09DA-4FBB-96B3-BEEEB2C 04619.html
The test description is for a MDD, but the basics are the same.
If a MDD,follow my instructions in the linked articl above.
One should also try a PMU reset:
http://support.apple.com/kb/ht1939
One should also replace the 1/2 AA PRAM battery.
Also, check that the 20, 22, 24 pin connector is properly fitted to the motherboard, and that the wires are properly inserted in the connector. There is also a 10 wire ribbon, which goes from the motherboard to the power button board. Make sure that the ribbon is firmly connected at both ends, and that there is no apparent damage to the ribbon.
If the power supply tests good in a MDD, the power switch board could be suspect.

Dual G5 won't power on - power led lights on push only

Hi,
My 2Ghz Dual G5 doesn't turn on and I hoped someone could provide advice on repair.
When I push the power button the power led lights (once) but nothing else happens.
I have reset the pmu, replaced the internal battery and swapped RAM with known good.
I don't think my model has internal LEDs on the MB.
Would the power led still light if I have a bad power supply?
Is there any way I can tell if i have a bad motherboard rather than a bad power supply?
Thanks,
Tom

In the G5 manual, in the section on trouble-shooting, it says what one light blinking, two blinking, 3-blinking means.
I'd look it up for you right now but I'm at the libary, using their public computer, since my PowerPC G5 also died, at last, 4sure, last week. I had that light blinking three (3) times.
I've come to conclude it is a bad logic board that many other threads mention. Cost for repairs are very high.
I (seriously), without realizing it, went through some noted classic symptoms of "grief." -- First, there was Denial (i.e. Disbelief); then Anger; Then I tried last gasp measure to make a miracle happen, trying to "be reasonable and negotiate," a fix.
All repair people I contacted told me to buy something new. I "lnegotiated," some extended credit and creative bridge financing. (Um...can you spell: p-a-w-n shop....deliberately going into overdraft protection...whatever I had to do, etc.)
Today, I placed the order for a Mac mini, M239LL/A. ON EVERY SPECIFICATION it is better than my now dead PowerPC duel 2.3 G5 tower and cost one-third the price. Plus it has Bluetooth and Wi-fi.
The Black Friday Sales are soon approaching so this may be the best time to make the transition. It would have cost as much to ship and repair my G5 tower and not only do you get the latest version of iLife, Snow Leopard, but rebate deals that you can get when buying a new computer offered iWorks at half-price, discounts on other Apple software, and third-party software. I got a full $80.00 rebate on an HP F4480 all-in-one printer (that only cost $80.00...plus you get that free subscription to a Mac magazine and back on the cutting edge of computers instead of looking at other's ride the surf.
Ten days ago I was devestated. Today I am as excited and pleased as I was five years ago when I got the G5 tower.
EVERYBODY I talked to, at the library computer lab, friends, all nodded their heads sagely and said: "Yea, five years...that's about it for a computer."
It just took me ten days to 'go through the transition. It was strange that something so valuable suddenly was worth nothing; i.e. not even worth repairing.
I had 4.5GB of RAM. Never needed more. Now I'll have 4GBs of 150% faster ram, 14% faster CPU, the new apple age mainstream Intel chip, etc.
I was using two PCI-X slots...that's about the only thing I won't be restoring but their use was not necessary at all and PCI-X slots were almost out of date the day i got them and what I really wanted, a video graphic's card, didn't exist for PCI-X.
So...that was my experience with this unfortunately event -- the death of a good machine.
But I was very pleased to have 4.7 years of trouble free prime time computing and didn't really think about leapfrogging to the future and doing it again.
If my old G5 was still going I'd still be a-okay with it, but stuff was happening with software improvements that were for Intel only and that just, slowly at first, got more significant.
The death of my G5 was like a "wake up call!'

MacBook pro won't power up! Acting asleep, black screen, fans don't fire up. Light nr catch pulsing, have taken batt out and reset but still blank screen, help!!

MacBook pro won't power up! Acting asleep, black screen, fans don't fire up. Light nr catch pulsing, have taken batt out and reset but still blank screen, help!!

You may want to try this.
Solution A
Start up your MBP while pressing Option (alt)|, Command, P, R until your hear 3 chimes rather than 2 as indicated by apple. This worked for me the first time.
Solution B
Start your MBP while pressing Option (alt), Command, S
Hold until you see the computer automatic routine. When it finally stops type the following followed by "return":
fsck -fy
It will probably indicate some problem related to "pcscd.pub" (should be 16 instead of 17). I haven't figured out what this means but somewhere in the Internet i read it is related to scan cards...
More importantly this routine will fix any problems with your HDD similarily to disk repair. When it ends, it will tell you if it has fixed/modified anything. If it has, run the routine again by typing again "fsck -fy"
Lastly, reboot by typing "reboot" (followed by "return")
Solution C
Start up your MBP while pressing option (alt), command, S
hold keys until you see computer commands scrolling
when the routine stops type the following, each line followed by the "return" key:
mount -uw /
chmod 775 /
chmod 1775 /
reboot
After which your computer should reboot on it's own.
Each of the above has worked for me at one time or another. Once your computer has rebooted from the DVD you can reinstall OS X. If your problems started after installing 10.5.6, then I don't suggest updating until 10.5.5.
I'm very very disappointed with my 2007 MBP, it started to give me problems after 1 year. had to change the HDD and lately when I isntalled 10.5.6 it suddenly refused to start up., My previous Mac laptop (2003 866Mhz) worked for 4 years without a hitch. Ironically I've had to use it to access the internet and find solutions for my current MBP.
best of luck

HP 8510p laptop won't power up, lighting bolt light blinks six times and off.

HP 8510p laptop won't power up, lighting bolt light blinks six times and off.
Blank/black screen, fan/disk not moving. Nothing happen other than the light blinks and off.
Same problem for battery powered; battery + power adaptor or power adaptor only.

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?
Please click the white star under my name to give me Kudos as a way to say "Thanks!"
Click the "Accept as Solution" button if I resolve your issue.

Power Adapter flashes orange light and won't power on.

I woke up this morning to find that my power adapter's light is off and it is still plugged into the surge protector.
1. When I push the button on the bottom, I get all 4 lights saying that it is charged.
2. When I plug the laptop with another adapter, I get a constant flashing orange light from the power adapter. Mine will flash orange several times and then go black. It's like it's trying to communicate something to me but I don't understand its language!!
3. I have tried resetting the computer, that didn't work.
4. I have tried powering up without the battery in the machine, that didn't work.
Any ideas out there?? I'm thinking that I need a new logic board but I also haven't backed up my info. Any assistance on either of these issues?

I found out that someone had spilt chicken soup on my laptop and it pretty much destroyed the logic board, optical drive, processor and other technical stuff.
*heavy sigh*

HPDV5T-1200CTO notebook, just replaced hinges, now it won't power on

I will go ahead and shoot my question and maybe one of you guys can give me a hand. I have an HP DV5T-1200CTO notebook. The hinges snapped along with the plastic piece that covers the inverter, that snaps in. All the snaps broke off of the screw that hold it in. So after getting a new hinge and makeing a new plastic piece (to order one they wanted $120.00 for a new one, ya right like I was paying that for a small piece of plastic) I very carefully removed the battery, held down the power button for almost a minture to drain all the power from the system, took out the hard drive, ram, and CMOS battery.
I've repaired hundreds of laptops and when working deep into any laptop always take out the cmos and drain the power to prevent any shock to stuff. So after taking out all the screws, popped the plastic pieces edges, gentrly unplugged all the connectors as usual (it had those weird no clamp, you just pull or push ribbon connectors for the power button and 1 other connector had that weird just push or pull zip connector, the rest weire normal flip the latch ribbons connectors. Anyways, after I got the LCD apart, I swapped out the old hinge for the new one and gently put everything back in its place along with my new plastic inverter cover piece. When I was completely done and put the cmos in and everything else was together, I plugged in the HPDV5T-1200CTO and the charger port / plug lit right up. But when I push the power button nothing happens! NOthing! So i took out the battery and tried it a bunch of different ways but nothing happens. The battery light comes on and stays blue for about 30 seconds to a minute and then goes outl.
What in the world could have happened? It's like pressing the power button doens't power it on. The power input ring lights up and stays lit no problem and the charger light comes on and stays on for 30 seconds or a minute then goes off. I know I didn't miss or break anything. Every screw and connection went right back into the same spot it was before the hinge replacement and all I took out were the screws to get to the hinges and carefully using nylon covered tweezers undid the zif connectors to remove the power button board and keyboard. I'm baffled because it powered up and worked fine even with the screen floppping because the hinges were snapped. If anyone has any idea of what it could be, please let me know. This is a really nice notebook with very low hours. I even have a 240GB solid state hard drive for it, so I don't want to junk the notebook. It's from 2010 but I've replaced way harder things on tons of other laptops and they fire up after the repairs. Thsi is the first time I've dealt with those stupid "No clip" ZiF connections on any laptop though. Could the power button be bad? The way it acts, is as if the pwer button is broke. Hopefully someone has some ideas.
Thanks!

Remove the main battery. Leave the AC adapter connected with the machine shut down for five or six hours to recharge the internal backup battery. Then try starting it up on AC power.
If that works, leave the AC connected until you have a new main battery in place and charged up. The backup battery will drain completely in a very short time if you disconnect the AC without a good main battery in place, and you'll be back in the same situation again.
If the machine still won't start after 5-6 hours of recharging the backup battery, reset the PRAM, then try again. If that doesn't work, you'll need to replace the backup battery too.

IBook G3 800mhz powers & starts up, after a shutdown it won't power up

One day my iBook G3 800mhz was working fine. I shut it down and later went to turn it on and it wouldn't do anything... no startup chime, no fans, no lights, nothing. I tried resetting PRAM, PMU, and many other things which didn't work at all.
I had a local computer store check it out and they told me the Motherboard was fried. I pretty much wrote the iBook off as DEAD. I took the battery out and it sat that way for about a month.
Today, I put the battery back in and hit the power button, and IT POWERED UP & BOOTED! I couldn't believe it. I shut it down and hit the power button again... nothing, it was "dead" again. I took the battery out and let it sit that way for about 2 hours, put the battery back in, pushed the power button and it BOOTED JUST FINE. So, I shut it down, pushed the power button and it was "dead." I took the battery out again, let it sit for an hour. This time instead of installing the battery I just connected the power adapter, pressed the power button and it BOOTED. To determine if it was the battery, I left the power adapter plugged in, shut down the iBook and pressed the power button... NOTHING, "dead" again. So, it's not the battery, it's not the power cord.
When I do get it booted, I am able to do a succesful Restart by selecting it in the Finder. Also, whenever it does power up, I am able to reset the PRAM and it will start up. Whenever I do a Shutdown (either from the Finder or by pressing the power button) it won't power up unless I disconnect the battery and power adapter and let it sit for about an hour.
I've been through all the forums and many websites and have yet to find a fix for this problem.
Anyone have any ideas?

Hey Shim..,
Certified Apple Technician and he agreed that it is probably the transistor (what he called it) that is failing, since it's not holding Date & Time
OK but a transistor is a long way from a microprocessor. Uhh where did he get his...oh never mind.
I have read in some forums about the leaking super cap,
I'd be interested in those leads
but I haven't been able to find any photos or anything that shows where on the board this is located.
Just put one up here, it's from a 12" G4 1.2 GHz:
http://www.photolava.com/view/d5pr.html
They're pretty distinctive, so hard to miss.
Here's the blowed up one from the 500MHz 12" G3
http://www.photolava.com/view/d5pu.html
Now that's blowed up
Is this cap replaceable? Anyone know of any step-by-step guide that would show how to go about this, or know of any company that might do this sort of thing? If it's not too terribly expensive, I'd be willing to give it a try.
Well let's determine if it's bad first. Usually when these things fail it's pretty obvious.
I'd try blowing out all the chips we talked about first since I believe a tiny bit of smutz will cause a CMOS micro to crash.
It reminds me of when these early PMUs will crash and drag the battery down with it in a matter of days vs years.
One of the resets in those was to remove all power and let it sit just like you're doing here. This was called resetting the logic board and was SOP for a no startup situation.
Richard

Computer Won't Power Up

After a BIOS update that went wrong, I received my mobo a few days ago from MSI. I re-assembled my computer 4 days ago, but started having random crashes. Today I decided to test the memory. When running memtest86 the pc just powered off unexpectedly. I switched it back on again, but after a few minutes it shut off again. This time for good.
I disconnected the power cable and plugged it back in. 4 red lights on the D-bracket flashed, the PSU, CPU, Northbridge and case fans moved slightly and then all went dead. I didn't hear any beeps or other sounds. This response lasted less than a second. Same thing happens if I turn off and on the PSU's power switch. The case power switch generates no response at all.
Here is what I've tried already:
- Cleared the CMOS - No changes
- Striped everything, leaving only the CPU, and then re-assembled one component at a time and powered on and off the PSU after re-assembling each component - No changes
- Unplugged the case's power switch cable and direct contacted the 2 pins with a screw driver (to check if the problem was with the case's power switch) - No changes
Any thoughts?

Quote from: NovJoe on 23-July-05, 17:25:56
Exactly Bass, I hope that it wasn't a Windows flash...
That's exactly what it was. However, I got the pc running for 4 days after MSI solved the BIOS problem. After the power up problem I took the pc to the my local tech service and they said it won't power up because the board is dead. Everything else works OK when instaled on another board.
Blazer, I took the battery out and inserted it again but that didn't fix anything. I have no multimeter, so I couldn't test the battery. How long do these batteries last? My pc is 1 1/2 years old (running 24h a day, 7 days a week).

T400 - Won't Power On, No Lights

Similar Messages

Maybe you are looking for