How do I fix Internal HDD Raw error?

Hello, my computer recently always restart without any errors. Sometimes it restart by itself when entering the BIOS setting, sometime restart directly when it goes to the Windows right after "Windows is Starting", sometime is restart after using the Windows for a few minutes or so on.
I not sure what is the problem, is it the HDD problem or is it the power supply causing the problem?

Now my HDD become a RAW file system and I cannot access the HDD. What should I do?
Do I really need to format it and I cannot recover any file that I need from that drive? I got more than 1000GB of important files on that drive which I need to use. Or is there any way that I can change the drive back to NTFS file system?
I not sure if it is the computer keep restarting and causing this drive to become a RAW drive....

When I first buy the PC nothing happens, impossible is the power supply problem? Because I have another one PC which is exactly the same with the current one that I use. Or is there any damage to the HD and the power supply and I need to replace it?

And I read a few articles, I wanted to try to convert the RAW file system to NTFS file system by using command port, CMD, but it said that the drive is already a NTFS?
Now this problem really annoying, and I hope someone can help me. Thanks :)

TheCyberMan said:

I think first you need to try and backup your data and important stuff you can use a linux live cd and run it from cd instead of installing it will be in memory only and you can copy your data and important stuff over to an ext hdd including program setup files but not the programs themselves.

Also make sure you have an up to date backup of your current system.

Once you have done that i would download the hard drive manufacturer's tool and test the hdd for errors run the long, full or extended test. It will repair errors if possible but any data that is in the repaired secotrs will be inaccessible please be aware. If there are hundreds of errors your drive may be on it's way out.

If no backup of current system then you will have to use the recovery DVD's or windows Operating system disc to restore your version of windows.

So can you give me a step by step guide on how to do all these things?
And is there no other way to make the RAW back to a NTFS system?
Why suddenly this happen?

And there is a way to convert directly back to NTFS right? But there is a risk of losing all the data???

TheCyberMan said:

If you have backed up system and data.

Do you have a result on the manufacturer's hdd test tool diag?

I don't have the result of manufacturer's hdd test tool diag yet.

jumanji said:

Hi Mual,

Your first priority should be to backup all data and other critical information and save it to another external drive.

You may try to boot from a Live Linux pendrive and access your hard drive for that.

The step by step procedure for recovery using Puppy Linux is here. Lucid Puppy way to recover files from a non-bootable computer

Hope that helps.

Once you have recovered all data, run the manufacturer's Dignostic test to check whether your HDD is OK.

I'll need time to do that. Now the problem is that I don't have any other external drive and this RAW drive i have now is more than 1000GB.
Pick it up from here. Hard Drive Diagnostics Tools and Utilities (Storage) - TACKtech Corp.

If you let us know the manufacturer of your HDD, the experts here may be able to guide you further.

Windows7lover said:

When a hard drive is no longer recognized in the bios, it usually means the drive has a physical problem. Is it under warranty? If not then you should definitely replace the drive ASAP and hold on to it so you can try and recover the data off of it with software. If there isn’t any data you want to keep, then just replace it.

Is it because of power failure?
I have a lot of files that I want, so I want backup.

TheCyberMan said:

A power failure may have an effect if that is what happened.

You need to backup immediately as described earlier or if you have an acronis boot disk you may be able to backup if it recognises the files.

Yes I think is a power failure cause it just restart without reasons. Sometimes it can last maybe a few hours without restart but sometimes it just restart at the BIOS screen, Windows Repair or something like that.
Even when I try to diagnose the memory it also restart.

I can't backup as I don't have the right tools and my pc keep restarting. I can't do anything.