20 Most Recent Lenovo ThinkPad SL400 Laptop Computer (2743LHU) PC Notebook Questions & Answers

the beeps are post during post the very first work is done by the ram,all the memory in the ram is first transferred to the hard disk,and remains active untill turned off.

make sure that your RAM and Cmos battery are securely seated

Test all leads that attach to your hard drive including electrical extensions SATA

the leads from your ((motherboard to your hard drive)) make sure they have a secure connection and are not faulty or just replace them they could be faulty

graphics card is seated properly with no dust in the socket you might have to remove it to check for dust

a computer needs power and data to travel through every working device and to its continue its cycle and to have and end to function make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure make sure the connections and are not faulty even the electrical extensions or just replace them they could be faulty a computer needs all electric current and computer data to travel to and through every working device and have an end to work properly click start right click on my computer so any faulty leads will end up with a computer error hope this helps you

Sub out the ram one at a time and power up each time, if you are lucky! the machine will start up, if not! remove the main battery and try again. If no change! the motherboard is the problem and you will need somebody to take it to the next level and find out the cause.

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

http://www.geckoandfly.com/4093/unlock-and-recover-hard-drive-password-hard-disk-password-removal-tool/ try this link it may help you

DriverPack Solution le meilleur logiciel installation de pilotes

It helps to know what device model and OS you are using though the following steps for changing from pattern lock to slide are for Android OS 4.0 (Ice Cream Sandwich):1. Unlock your Android device2. Find the Applications menu and select "Settings"3. Under the "PERSONAL" group, select " Security"4. Under "SCREEN SECURITY" group, select "Screen Lock"This will ask for the security pattern first.5. The options for screen lock will appear, select "Slide" and you are done!Hope this helps.

Looks like your caps lock is on...

factory reset the tablet

Just press "delete" "F2" or "Escape" keys imediately then you power on your computer. (Key depends on your pc model)

Try this http://www.wikihow.com/Clear-BIOS-Password

Do you mean it will move with a mouse, but not the touchpad? If so, maybe settings in this article will help: https://support.lenovo.com/us/en/documents/ht075745

Battery recall - Lenovo Support (US)

support.lenovo.com/us/en/documents/hf004122

LenovoJul 9, 2015 - These batteries were manufactured for use with ThinkPad notebook ...batteries with new notebook computers or as optional or replacement batteries on the... Which ThinkPad notebook PC models are affected by the recall?

Remove the battery pack - Lenovo Support

https://support.lenovo.com/documents/migr-46510

LenovoJun 17, 2014 - Install charged battery; Slide the battery latches to the locked position. Slide the battery latches; Turn the computer over again. Connect the AC ...