How to fix hard disk not exist

check the connection.

Hi  

Run a hard drive test in DOS...HIRENS CD etc, it sounds like a failing hard drive...

All the best Brett  

How do I do it?

Hi  

Download Hirens and run it...BOOT from it...

All the best Brett  

What do I do when I get it working?

Google how to use it.....

Start the disk test:
Randomly right click a partition in “My Computer” to select “Properties”=> Open “Tools” tab and hit “Check Now”=> Mark “Automatically fix file system errors" and "Scan for and attempt recovery of bad sectors".

How can I get to My Computer if I can't access Windows?

I tried to format my thumb drive to fat but the program I used said that the volume is too big.

I took it out and I put in it in a lot of times.

Hi  

WRITE Hirens to a CD and BOOT FROM IT...

All the best Brett  

I got it now. How do I run the Hard Drive test?

I ran the test and it failed. I put a different hard drive in it and it worked. I updated the bios and it did nothing. I think the boot sector is corrupted on the bad hard drive.

You said that you ran the HDD test through Hiren's and it failed right? It's not your boot sector, its the hard drive itself is bad. You even proved it to yourself by putting a different drive (which we would consider a known good) in and it worked like it should.

Time to replace your hard drive.