ibm solutions for most thinkpads
There may be a quick fix,
If you remove the battery from underneath, and then you will see a small watch like battery ( Yellow in colour)
You will need to unscrew or remove this for approx 5-10 mins,
This will drain the motherboard of any incorrect settings etc etc,.
When you put it all back, you will need to press F1 so that you go into the BIOS screen, and then set the date and time etc, and then save.(F10)
This should resolve the issue for you.
Any problem please let me know