How boot on drive X and restore windows on Drive Y with restore point

Hello,
I have a windows 7 which had problems with windows installer. I paid a company -Restoro - to do it. Stay away from them. THEY ARE CROOKS AND RUIN YOUR PC.
They did a restore point before starting.
On my PC, i have dual booting. I have two hard drive and both have windows 7.
Now, when i select the drive they did work on it, i cannot boot. I get the boot selection menu, i select the drive, it starts with window message and after few seconds, i get Blue Screen Of Death. Briefly, less than a second, then computer reboot itself.
I use the phone and filmed the message, and it was the error 7E.
I boot then in the second drive(i used to write the post now) and when i look in the System folder in the other drive, i can see the restore point file because has the date and time when the "technician/butcher" started.
He got remote acces and i saw he is doing a restore point before it start.
How i can use that restore point to put windows back on the original status before he started to ruin it ?
I have a boot/recovery windows made with windows from that drive. Can that help ?
When i boot with it is just looking for boot problems, but not for restore point recovery. What to do ?
Thank you.

Hello Samuria,
I boot on the working windows on drive C:
The defective drive which has its own restore file it is E:
Can you please help me with the necessary commands to navigate to the right place before i start doing the restore from comand prompt.
Sorry to bother you but i like a child which need to be taken by hand to go to a place.
I read the link but i understood half of it.
Please help.
Thank you

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Hello Samuria,
I went on command prompt with administrator privilege.
From there i changed to E:
From e: i navigated to windows\system32
I typed the command rstrui.exe
The system restore windows show up, but it did not show the restore point i want
It shows restore points from probably the drive i am at the boot.
How to select the restore point located on drive E:\System Volume Information ?
I am so close.
Please help
Thank you

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Hello Samuria
Regardless what i do , is still shoe the restore points from drive C, and nothing from drive E:
What to do ?


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Hello Samuria
It is a disaster. I disconnected the boot drive and left just the damaged one, plus windows repair disk.
I boot-up on the CD and selected the system restore. The error message was that it is not restore point.
I tried on command prompt. I moved to the drive letter, CD directory to the System Volume information folder.
Did a dir command and show me all the files, including the restore file.
I do not know what to do.
Please help me.
I have a lot of work there and i cannot reinstall all my programs in the working drive. It is a pain , plus time consuming. If i write to a software company and ask to resend the license, , they do not do it on the spot. 2-3 days and more.
I must recover the damaged drive.
Thank you.