i bye a new laptop with free dos. i can change my os to win7. ofter installing win 7 os it shows error on blue screen, and the error message is please contact your dealer and ask for updated bios for your laptop.
My name is Varun and I work for the Social Media and Community Team at Dell.The problem you are facing with the system we can certainly resolve that will request you to follow the below troubleshooting steps.
1:Update the BIOS from www.support.dell.com and run latest bios check the date available there and make sure the ac adapter is connect with the system and the battery if more than 10% charged.
If you have any question regarding the troubleshooting steps please reply us back.