'No OS no HDD' error

[Multicore]

My HP laptop with genuine Win7 freezes & this is displayed on the screen:
no OS, no HDD, press F2 for system check

After restarting this is displayed on the screen:
Windows detected error in shutting down
OPTIONS:
Repair your computer
Start Windows normally
Safe mode
etc...
etc..

I select the "Start Windows normally" option & everything runs fine afterwards.

This has occured two times & both the times movies were being played in genuine Power DVD 10

I had run Disk Check utility on C: drive & also defragmented it.


My questions are:
1> What may be the root cause of this?
2> How to fix this, so that this does not occurs again?
3> If i select the "Repair your computer" option, what files may i lose, if any?

 

[Multicore]

Looks really depressing that no one has any advice.

 

[SHAWN]

1. It's tough to say without troubleshooting via process of elimination. You can start by running memtest (Memtest86+ - Advanced Memory Diagnostic Tool) to confirm you don't have any memory issues. Next, I'd start with a fresh install of Windows, followed by replacing the hard drive if it persists. Next step would be to replace the system board if this all failed.

2. See #1

3. If you select "Repair your computer" option it will not delete any of your files. It may cause a software boot issue but you could always install the laptop drive into another computer and recover data. As always, before you start fussing with your computer, back up your data.

 

[Multicore]

Thanks for the reply. I will try this.
BTW, no such error has popped up since i performed the disk check.