Lenovo ThinkPad - Popular Questions, Answers, Tips & Manuals

remove the battery large.
then run on AC pack only
#1 top failure of all mobile PC is that battery, so unplug it
then test with AC pack only.
work now.? and all vents must be clean, end to end. not just fan.
there i no fuse it uses current regulator, imagine genius magic electronics fuses that never blow out, and bingo.

OK big battery out, an RTC coin cell fresh.
then fan blows.
next is BIOS, do the BIOS screens work if not the mobo is dead.
have 2 RAM stick on the 2 slots>? try one at a time
run the PC with all modules removed, (options)
remove hdd?
remove, dvd drive.
think like this. Get bios working first
learn that modules can short, and when they do the power regs shut down.
so we unplug all things to the mob,
until only 1 ram and cpu remains.
see? (this is called power overload fault isolation tactics)
even the screen only can be dead, you never mention text showing
you can test the mobo with external screen via that rear (?)_ VGA jack what if that worked, did you learn something here, sure.
this pc has tons of modules to pull, even bluetooth. wifi, sound and more. if you look at all parts inside or sold by ebay, bingo. lots

Lenovo ThinkPad... | 66 views | 0 helpful votes

no boot. SL500 notebook. 10 years old now? 2008 made.

no failed screen photo posted. making answers near impossible to guess what is there on screen.
PC's boot in serial sequence.
Power on
BIOS posts. (power on self test and possible errors)

then asks for BIOS PASSword (bad thing to have and forget) never turn this feature on.
then if Bitlocker was turned on you must get this password next, if lost doom it is for HDD.'

next the HDD boots the OS. (or fails with errors)
what OS is this, windows (what) or Linux (hat) or freedos, or well lots more OS.
let my guess its windows. so the next step is
windows password, is this where you get stuck.

this messages (means recovery mode) in english.
To interrupt normal startup, press the
blue ThinkVantage button"

it is the BIOS hot key for recovery.
if the bios password is not set then BIOS works.

My guess is your HDD is bad, and cant boot.
you read the manual, (did you) and see the recovery chapter. and then attempt the recovery
and that works , good, but if not that means the HDD is bad, or damaged.'
page 41 covers how to use factory recover disk

If you need help , next time tell the helper
what OS came new with PC and was it upgraded.
to say w10. WE CAN NEVER GUESS what
OS is there (operating system)


Lenovo ThinkPad... | 110 views | 0 helpful votes



Lenovo ThinkPad... | 223 views | 0 helpful votes


I would recommend installing all the newest drivers for the unit.

Lenovo Thinkpad... | 43 views | 1 helpful votes

If you right click on the sound icon down by the clock and choos "open volume mixer", are all of the levels even?

Lenovo ThinkPad... | 61 views | 0 helpful votes

Try go into BIOS (press F1 after you start the pc). Then F9 for resetting BIOS settings.

Lenovo ThinkPad... | 153 views | 0 helpful votes

sounds like the driver you updated is causing it to shut down.try and start in safe mode and see if you can sort it from there.

Lenovo ThinkPad... | 245 views | 0 helpful votes

If the computer goes into sleep mode, some devices won't wake afterwards. As a test, either disable sleep mode, or open Device Manager, find the adapter or its USB port and set the power properties to not allow the device to turn off to save power.

Lenovo ThinkPad... | 36 views | 0 helpful votes

It really depends on what kind of cold you're talking about. External temperature cool enough to produce condensation in the system can really mess your system up. Even to the point of destroying it. It's always good to keep your system above freezing and even above the dewpoint of where ever you're located.
If you're talking about cold being just starting the computer from any temperature from an "off" power mode to "on" then you could have a video issue. You can check your Event Viewer when it finally powers up to get more info on what caused the problem.

Lenovo Thinkpad... | 214 views | 0 helpful votes

this is not to say for you to try it.if you dont no what you are doing please do not try this get some one that does know how to do it.
if you do try this then do so at your own risk.
Turn off laptop, remove battery. Remove palmrest, and remove keyboard (leave keyboard plugged in). Remove CMOS battery, and boot up the laptop without CMOS battery. Your Power-on password is now removed, put it all back together and enjoy!7 Feb 2012

How to Remove and Reset the Power-On Password for a Thinkpad ...

or go to this link and have a good read up about what else you could try first. password power on lenovo Google Search

Lenovo ThinkPad... | 61 views | 0 helpful votes

That's correct. I'd recommend to fix it in repair shop rather than on your own if you don't know how to solder.

Lenovo ThinkPad... | 82 views | 0 helpful votes

Traditionally with ThinkPads:

1. The BIOS password can be reset with the CMOS.
2. The Supervisor password cannot.
3. The HD password cannot.

If it's the harddrive that's locked you will have to replace that. If it's the Supervisor password you need to replace the system board which kind of defeats your purpose.

Lenovo ThinkPad... | 60 views | 0 helpful votes

Well there are many reasons but from what you've
said it can only be the Switch itself or your Router's
Firmware needs to be updated.

Go to Start: Type cmd in the command prompt Type
ipconfig press Enter look for the default gateway that's
your Routers IP Type the IP number into your Browsers
url or address bar press Enter. Once inside your Router
or Modem/Router view tabs and look for Update Firmware
Follow Prompts If this does not fix your problem then you
must further look into the Wireless Switch the Light is the
Switches Confirmation that it is Working Properly. Also
Driver will not cause this Function to not work and I know
you said the Drivers are Good and pls don't be Mad but has
the Adapter been Enabled with the Assumption your Computer has an RJ45 port for hard wiring.

Stay Positive and We'll Figure this Out.

Lenovo ThinkPad... | 214 views | 0 helpful votes

You need to get a hold of a windows xp recover boot cd/usb. You can download it on the internet (if you can with something else than the lapop)

Lenovo ThinkPad... | 65 views | 0 helpful votes

It might be on a power saving plan. You can change it if you want to but running it on battery while watching movies will drain the battery fast. Anyway, right-click the battery icon on lower right of the screen or search for power options. You can see what plans your laptop is saved to. Choose balanced or high performance or recommended settings.

Lenovo ThinkPad... | 146 views | 0 helpful votes

My levono does the same thing it virtially turns off the touchpad when typing to stop mouse from moving and causing you issues, I found a setting in the touchpad software to stop this from happening

Lenovo ThinkPad... | 175 views | 0 helpful votes

Not finding what you are looking for?

10,362 questions posted

Ask a Question

Usually answered in minutes!

Top Lenovo Computers & Internet Experts

Lee Hodgson
Lee Hodgson

Level 3 Expert

4810 Answers

Muntejaya Ginting
Muntejaya Ginting

Level 3 Expert

10422 Answers


Level 3 Expert

1997 Answers

Are you a Lenovo Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides