Here's what happened. The laptop was reformatted with win7 but it got stuck in "Completing installation" for 7 hours. so I decided to restart the laptop. But when it restarted and I chose again the "custom" installation for reformat, it doesnt display drives anymore. "No drives were found. Click Load Driver to provide a mass storage driver for installation" and in BIOS it cant detect the SATA HDD anymore
verify the SHA1 hash on the windows disk to make sure its not corrupted. I've had disks that seemed to be in perfect working order, boot up to install, no hard drive, verify the USB installer and get hash-fails. remake the installation USB from a working master, and boo-ya! hard disks found.
The fact that the install took seven hours is a good sign either the disk is bad, or the hard disk / hard disk controller has a problem.
Check the drive to ensure it is tightly secure.
Try resetting the BIOS to factory defaults.
Try changing HDD modes in the BIOS. try out IDE, AHCI and RAID to see if any help.
Try running a S.M.A.R.T. check on the drive and check the S.M.A.R.T. logs.
Try the drive in a different computer.
Here is a lil more info on S.M.A.R.T. status codes: http://en.wikipedia.org/wiki/S.M.A.R.T.#Known_ATA_S.M.A...
thank you. the notebook can read it now. i removed it and checked it and its working. now the problem is "Windows cannot be installed to Disk 0 Partition 2" when i try to install the win 7 os in the partition of the drive. thank you for you answer --- btw i do not know how to reply to your answer so ill just post a new one