Constant shutdowns with no warning

Hi, I have an acer Extensa 5620Z laptop and recently, without any warning it just restarts. A blue screen appears out of nowhere and then the computer restarts.
When I was able to choose how to restartt I chose safe mode and went to the event log where it said "The driver detected a controller error on \Device\Ide\IdePort2.". I have no idea what this is and I've seen a bunch of stuff talking about reconnecting thing and adding new roms, but i didn't add anything and have no idea how to reconnect it.
What should I do?
I was thinking about reformating but will it resolve the problem?

Hello sonung and welcome to Seven Forums.

Try opening up Device Manager and then click on the + next to each category. You'll be searching for any devices (more specifically, any controllers) that show a yellow or red "flag" indicating a problem.

Device Manager Windows 7 - How Do I Open Windows 7 Device Manager?

If you find any issues, provide a screen shot. It will help to diagnose the next step(s).

Screenshots and Files - Upload and Post in Seven Forums

hi
none of the controller devices had anything indicating that there was something wrong.
wht should i do next?

Check the physical connection of your hard disk to the motherboard. To do so:

• Shut down and turn off the computer
• Remove the AC Adapter
• Remove the battery
• Hold down the power button for 15-30 seconds to close the circuit and drain any residual power
• Remove the panel on the underside of the laptop where the hard disk is housed
• Remove and re-insert the hard disk by sliding it away from the connector and then gently but firmly pressing it back into the connector (no screws should need to be removed to do this step)
• Replace the panel on the underside of the laptop to cover the hard disk
• Replace the battery
• Replace the AC Adapter
• Turn on the computer and see how it responds

Post back once these steps have been implemented whether the system is stable. Sometimes these crashes can occur due to a loose connection.