Windows error 0x0000225 after attempted clean recovery

Hello everybody; I've been looking through the forum for a few hours with no help so I'm creating a new thread to expose my problem


I have a Lenovo G470 with Win7x64; wich after 2 years of use started to do everything really slow, so I tried to use the Lenovo recovery functionality wich was supposed to return everything to factory default.

After trying to use it, it threw an 'invalid partition' error or similar; and then when I tried to reboot to search the issue, it just started booting in recovery mode.

From there, I started googling around and found that maybe there was an issue with the volumes/partitions, so I entered in the diskpart list commands to see what was happening, and accidentally rebooted.
Laptop started normally, but after choosing the OS (It has this little menu where I have to select win7, it does not have another OS installed), it started to promt the 0x0000225 error.

Attempting a USB recovery, it leads me to select where I want to make the recovery, but options are



Operating System | Partition Size | Location
Windows 7 | 0 MB | (Unknown) Local Disk
Windows 7 | 29690 MB |(D: ) Lenovo


So somehow C is gonne and... empty

Then, what I was able to retrievve with

List partition:
Partition ### | Type | Size | Offset
Partition 1 | Primary | 200MB | 1024 KB
Partition 0 | Extended | 283GB | 201 KB
Partition 3 | Logical | 28GB | 254GB
Partition 2 | OEM | 14GB | 283GB


List volume
Volume ### | Ltr | Label | Fs | Type | Size | Status | Info
Volume 0 | E | | | DVD-ROM | 0B | No Media |
Volume 1 | C | | NTFS | Partition | 200MB | Healthy |
Volume 2 | D | LENOVO | NTFS | Partition | 28GB | Healthy |
Volume 4 | | LENOVO_PART | NTFS | Partition | 14MB | Healthy | Hidden


AS far as I know (and understand), the Partition 0 is what somehow is 'missing', or not linked to Partition C. Partition 3 is Volume 2, which is a partition where some drivers from lenovo are, and Partition 2 is Volume 4, which is the recovery section that seems to be working.


So, my issue is kind of how can I restore the Volume/partition union, and I think that from there onwards it should appear on the recovery section correctly allowing me to format it a needed.


Thanks in advance, and point me out if something is missing!

I was able to connect the disk to another PC; and this is is what diskmgmt reads of it:



And there are 253GB of free space; should I create a new simple volume and assign it the letter C? I want to be completely sure of what steps to follow, as this is the laptop I use at work D: