Please try to do an operating system recovery; you can follow the steps at:
Be aware that for you to do a system restore you will need to use an USB keyboard instead of wireless keyboard so you can use your keyboard to access F8 and follow the steps.
In this case, have you tried a BIOS recovery?
Please follow the steps to do a BIOS recovery at:
You can download the latest BIOS version here:
If these troubleshooting steps do not work, please submit a Webticket to get your unit replaced.