Has your Dell laptop gone onto a sleep mode and is not getting powered on? Or is the battery draining out at a really faster pace? You need to make sure that whenever you put your laptop in the sleep mode, you power it on after some time and do not wait days after that. You can try the basic troubleshooting steps for rectifying these errors and if you wish for technical help you can reach out for the help from Dell Customer support at any time you wish as the number stays put 24X7.