Problem with ibm thinkpad r40

Could be a bad motherboard

If thelaptop battery is more than 3 - 4 years old then the battery could be worn out.Rechargeable batteries have a finite number of charge and discharge cycles andwill lose their charge capacity over time, i.e. won't charge to 100% andgradually the charge reduces until the battery won't charge up at all. OR Thebattery shows a 100% charge but when the adapter is disconnected the batterydrops off to zero capacity in a very short time. If the battery drops to anunacceptable charge level then the battery needs to be replaced.

the r40 has no hardware switch. it has a software switch. you must first determine what type of wifi card if any is installed. most of the stock cards are intel or cisco and the ibm support site has the software used to control them. sometimes, thru the network connections, windows can take control if the drivers are installed

One long two short beep? Sounds like the common Video issue. You can try the reflow method. Look it up on yourtube or you can get the reflow guide from www.msbin.com

Hi:
I checked on a beep code for your IBM laptop, and the only code listed with 3 beeps is:
One long, two short beeps System board failure; Video adapter problem; LCD assembly failure

None of these codes sound like an easy or quick fix for you.
If your code is not one long, and 2 short beeps, repost and update!

Test your laptop by connecting its video ouput (base of the computer at the back) to a known working monitor. Then power on the laptop and see if the known working monitor behaves the same way your laptop's monitor does. That will narrow down the possible causes.

diid u change memory or something it means that some hardware is not compatible or broken lik memory mostly it because of that

It seems to be u have problem with ur RAM ..Try to change it

I have about 50 IMB Lenovo ThinkPad R40 at work, this "defect" comes if in use every day, from 1½ year to 2 years.
I have tried to fix it, but have to admit that I have found my superier.
Buy yourself a new one here for xmas.

Do a system restore to a week or two before this all happend otherwise it may be the Hard drive starting to go bad if doing a system restore don't help and also you should run your antivirus and spyware Hope that helps you out