I used to have a Vista Home Basic installed on my pc then I upgraded to win7 ultimate.
I did a fresh install on my drive where my vista was used to be installed.
Now after the install my usable drive was gone.
I have 3 HDD's installed and all of them are functioning 1 of them is a PATA and the rest is SATA. Back then all the drives are usable, 1 of my drives have 2 partitions so it would show 4 drives on my computer.
this is my system specs:
Time of this report: 5/18/2012, 20:27:39
Machine name: SWEETMELODY
Operating System: Windows 7 Ultimate 32-bit (6.1, Build 7600) Service Pack 1 (7600.win7_ldr.100618-1621)
Language: English (Regional Setting: English)
System Manufacturer: Acer
System Model: Aspire M5600
BIOS: Phoenix - AwardBIOS v6.00PG
Processor: Intel(R) Core(TM)2 CPU 4400 @ 2.00GHz (2 CPUs), ~2.0GHz
Memory: 4096MB RAM
Available OS Memory: 3326MB RAM
Page File: 1287MB used, 5361MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 32bit Unicode
-==-=-=-=-=-here is a screenshot of my disk management
Looks like the partition table is corrupt.
I use testdisk (http://www.cgsecurity.org/wiki/TestDisk) to search and recover the partition table.
It's a free tool. It is a bit scary to use though so it's not really for beginners.
You can try disk internals partition recovery instead, but I think that one doesn't actually do the job until it's paid for. try it out though and see if it works.