Unexpected hibernation now won't boot - Computers & Internet

Release your battery. and you plug it again
now, you must turn ON your laptop. after show that desktop/wallpaper, you must to set your power setting.
START MENU-CONTROL PANEL-POWER OPTION (double click)-in tab Hibernate, you can see that option. If you will be dissapear that check in ENABLE HIBERNATION, you will get soon in your laptop, not be hibernate mode again.

How do I get my dell inspiron1525 off hibernation mode

Use your recovery discs, keep CD/DVD in the CD/DVD rom and start your computer. Press F2 to enter setup (some models require F1 or Del button to be pressed on start up to enter the setup, check the first screen that appears give u information which key will lead u to the setup), enter in bios and change the boot sequence to have CD/DVD at the first preference, exit saving changes and your system will reboot using ur CD/DVD. Follow the instructions to repair your OS, hope this will solve the problem.

Here's what to try:
Unplug the computer.
Remove the battery.
Wait about a minute and reinstall the battery and plug it back in. If you are running Vista, this should do it. Vista had (may still have, for all I know) a bug that didn't let it come out of hibernation.