Hi
You have a couple of options as I see it please try these steps might help you to fix your issue.
1) Disconnect the Battery & Adapter then press & hold the power button on Notebook for 30 seconds then turn on the unit and checked.
2) If possible, turn on power, press F8 to enter Windows Advanced Boot Options , and select Repair Computer option, or enter Safe Mode and run Memory Diagnostics.
3) If possible, turn on power, press F10 to enter BIOS mode, Go to Diagnostics and run Memory Test and Hard Drive Test if any test fails you need to replace the part.
4) If unit does not load to F8 & F10. You need to reseat the Hard drive & Memory from the back panel off the unit.