@Bill2 I'm sorry I can't go past the BIOS coz remember it doesn't see the OS drive. I had tried all those yesterday I even backedup everything in drived D: 7 formatted it without success. that's when I came to this forum. before formatting I could not hide the partion even on another comp as it was an active partition.
Thank you.
Have you tried the Diskpart methods I linked?
@Bill2 there's only one partition on the harddrive now i.e. C: where I had installed the OS. It has all the folders created by the OS intact.
Thank you.
Check the hard drive with the manufacturer's diagnostic tools.
Hard Drive Diagnostics Tools and Utilities (Storage) - TACKtech Corp.
HD Diagnostic
@Bill2..Do u think I should still try the Diskpart?
I would have liked to see a disk management screen shoot before all this happened. It sounds like D: was the active boot partition, not C:. What ever you did to D: may have erased windows 7 boot loader and ability to boot up. One option is to slave that drive in another system so you can pull any files you need to backup off and have a look at the disk structure. If there is nothing on it you need nuke it and start over with a clean install. Delete all the partitions and create new ones with the advanced options.
You cannot change your System drive letter. It will always ruin your Windows. Copy out your files and reinstall: Copy & Paste - in Windows Recovery Console
If you didn't change the Win7 drive letter, then boot free Partition Wizard bootable CD, post back a camera snap of the drive map with listings showing. Next make sure the 100mb System Reserved partition (preferred) or the Win7 partition itself (if you don't have 100mb) is marked Active. If not rightclick in PW to Modify>Set to Active, OK. Next highlight the Win7 HD by clicking on it, then from Disk tab select Rebuild MBR, OK, Apply all Steps.
If Win7 now fails to start, boot into Win7 DVD or Repair CD to run Startup Repair up to 3 separate times with reboots in between. If Win7 fails to start, change the Active partition from 100mb to Win7 partition and try Rebuild MBR from PW disk tab, then if necessary Startup Repairs again.
If this all fails, you'll have to copy out your files and reinstall: Reinstalling Windows 7
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