My lenovo T440 is not turning on plus it is beeping every 10 seconds with green light from fn key+ yellow lights from F1+f4 at the same time. I've tried to remove the battery and press the power button then connect the plug but no use. Thank u in advance.
Do you have warranty? If you do, contact the reseller. If you do not have, there may be some memory issue. I recommend you to reset BIOS by removing the CMOS battery for a few seconds. If this does not help you may need to test your RAM memory. I recommend you to contact a technician to investigate the case. Unfortunately some hardware may have failed.