[HELP] Can I install a new version of Windows 7 on my Lenovo G550?? (+ One Key Rescue???????)

Question

I bought a Lenovo G550 with 4GB DDR3, T4300, 320Gb. It came with Windows 7 BASIC installed and I'd like to install a version of Windows 7 Professional I have here. I want to do a clean install!
Well, when I started the installation, the disks were partitioned as follows:
1. 200 Mb - System;
2. 233 GB - Hard c: \ (where I believe that Windows 7 Basic is installed)
3. 30.2 GB - Lenovo (here are the drivers, totaling 800MB used!)
4. LENOVO_PART - 14.8GB [OEM] (is a hidden partition! Probably the One Key Rescue. He says CAN NOT INSTALL, OEM is because, for the MANUFACTURER)
The question is: if I delete the first 3 partitions, leaving only the hidden partition (Lenovo_PART-14.8Gb) and install Windows 7 Professional, will work?? If later I want to restore the system using the discs created by One Key Rescue, will work too? That will give an error?
PLEASE HELP! Windows 7 BASIC sucks!
(Thanks to google for the english translation)  

Answer 1

OK - I was under the impression that you had a brand new machine and did not have to restore any data stored already.  If it were me - I would back up all of my data - not with True Image - but just back it up.  Then I would do a clean install of Windows 7  (getting rid of all those partitions) and either create one or two.   I just use one and then do regular images wtih Acronis True Image - but you could create two - one for the OS and applications and another for all your data directories. 
I don't know how you would do a new install while trying to create the partitions exactly the way Lenovo has them when the machine is delivered.  (I don't think Lenovo does either)  So - I would make it simple and just get rid of them all after your data is backed up.   If you have new applications loaded, I would just install them again.  Not the most convenient but in the long run you will have an easier system to back up and manage. 
I'm not a fan of Lenovo's instant restore proceedure, because A: it is complicatied, and B: it doesn't buy you anything if you crash your hard drive anyway.  It is really only good if you A: do regular backups with the instant restore, and B: either have a virus or corrupt some data and need to use it.  You can do the same thing by using the Microsoft system restore point proceedure.  So - to me it is just a gimick and makes your drive a mess wtih hidden partitions, etc.  
That would be my approach.  I would NOT try to backup your current configuraton with Acronis before installing a new OS.  It can be done - but I think it will be very messy.  A much better approach would be just to delete all of those partitions with the Windows 7 install proceedure - then create just one or two new partitions as you install the new OS.  Then start using Acronis to do regular images on your drive.  You can also do incrementals so it only takes a couple of minutes each day. 
Installing Windows 7 is a piece of cake as it finds all the drivers for you.  Just make sure you have it connected to an ethernet cable.  Then install your applications and then load your data back.  Very straigtforward. 
The advantages you will get will be:  A:  You will get use of your entire hard drive space.  B:  It will be much easier to manage and back up.  C:  Using Acronis to backup your drive will be simple  D: If you ever lose data you can simply use Acronis to restore the directory or data file, or E:  If you lose your entire hard drive you simply get a new one and then restore from the Acronis CD and point it to your last backup image. 
I hope this helps.  Good luck.