Thinkpads Forum

hi.. i am muzzi from pakistan... i bought a lenovo thinkpad t500 2 months ago.. it was heating up too much.. so i bought heatsink and fan and replaced it and my battery was also dead because it was not showing the correct time... so i changed it also... after assembling my t500, when i start, it gives me cmos error and then asking for password... i have not set any password before.. i also asked the one i bought from and he said that he also has not set any startup password...

do anyone know what kind of that password is??

thanks

Hi Muzzi. I do not have much experience with password prompts however I did find this page from Lenovo. Take a couple of minutes to read through this page. Note that there are some prompts that have a lock image either next to a person, hard drive, or a computer. Do any of these match what you are seeing?

http://support.lenovo.com/en_US/detail. ... MIGR-59377

Welcome to thinkpads.com!

If you have removed or replaced the CMOS (backup) battery from the laptop and you are now getting a password prompt every time you turn on the laptop, then what you have is a Supervisor (BIOS) password. Somebody in the past had set the Supervisor password. You would never know it is there unless you have tried to access the BIOS. When the CMOS battery dies or is removed, then the system loses the date/time. When this happens, the BIOS will force the user to enter the correct date and time. If a BIOS password has been set, then you get the prompt. You cannot do anything else with the laptop until you get into BIOS and reset the time. The laptop will not be able to boot any operating system until you do.

Rules of this forum say that we cannot discuss any method the bypass this security system. The only thing we can suggest is to contact the previous owner(s) and see if they can supply it. The factory (Lenovo) advice is to replace the motherboard.