Hi guys maybe someone will have answer. I have Asus x540s and after windows 7 update everything was alright, but after few hours it didn't start properly. Everything looks working all indicator lights works, but i geting blank screen. Tried any combination. One time after several turn off and turn on. It worked but no bios only stuck on Asus logo. It has internal battery. So maybe i have to remove it. To reset it because there is no pin hole for battery reset. Any other suggestions guys?