Can I use bootcamp if already using parallels?

Hi - This is my first post so I hope I am in the right place! I had Parallels and WIndows 7 installed by the apple reseller who sold my my macbook pro so didnt set them up myself. I have only occasionally used windows in parallels so speed has not been a big issue. I am now using it more and it can run very slowly particularly during start up and shutdown rendering the machine pretty useless for 5-10 minutes or more. It doesnt crash it just takes an age to boot up windows via parallels or shut down windows in parallels.
I am assuming that the machine is struggling with processing power and/or memory to run both operating systems and the software packages in each. I am thinking a solution would be to boot up and run windows on its own in boot camp to give it all the machine's power and I can cope with not having both operating systems up and running together. I would just boot up in Windows for a while when I need it.
My question is can I use the Windows 7 operating system from wherever it currently resides on the hard disk to run it in boot camp or do I need to reload it using bootcamp (via the boot camp assistant)? OR - is there any other trick to make parallels run much quicker?
My sustem is :
MacBook Pro
13-inch, Mid 2010
Processor 2.4 GHz Intel Core 2 Duo
Memory 4 GB 1067 MHz DDR3
Software OS X 10.8.5 (12F37)
The Parallels I am using is:
Parallels Desktop 8 for Mac
Build 8.0.18608
(Revision 898384; July 17, 2013)
Many thanks

Mac Basics- Using Windows on your Mac with Boot Camp
Boot Camp- System requirements for Microsoft Windows operating systems
10.8 Boot Camp Manual

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I know, the subject sounds pretty complicated, but don’t worry: the process of doing it is even worse.
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“hal.dll missing or corrupted message”.
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<a class="jive-link-external-small" href="http://forum.parallels.com/showthread.php?t=31190&page=3">http://forum.pa rallels.com/showthread.php?t=31190&page=3
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Locate the Command Prompt app in the Start/All Programs/Accessories menu
Right click on it and start it as administrator
At the DOS prompt:
Select your DVD drive (D: or whatever)
Type
cd \BootCamp3.0\Drivers\Apple
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You will be required to reboot.
Restart Windows 7 and enjoy!
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Yes it is, follow the Boot Camp Instructions here

Using Parallels with Windows 7 on Bootcamp caused startup logo to disappear

Please let me know whether this is just neurotic or what! Windows 7 RC on Bootcamp partition worked great until I installed a trial copy of Parallels 5.0. Even with Parallels, things seemed fine, but I did not like some behaviors of the program when run under Parallels. Using Parallels, I was leery about the issue that when I clicked on the icon of the E-drive (the Macintosh hard drive), I kept getting the message that it needed to be formatted. Certainly I was able to access the files of the MacIntosh through shared folders, and by dragging files from desktop to desktop, but I saw very little advantage of for running Parallels for what I do with the Windows programs, and I did not want to mess up the Macintosh hard drive by an accidental reformat while using Windows. Also I like the fact that if I start Windows from the Bootcamp partition rather than access it via Parallels, Windows is physically well isolated from MacOSX, I do not really have a chance to delete or mess up the Mac hard drive, and at the same time one can access the Mac OSX disk for files that might be needed by dragging these into the Windows partition. Parallels just seemed unneeded.
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The bottom line is that even though things seem to operate fine otherwise, I feel Parallels has somehow adulterated the Windows installation, which I would rather just run as Windows without artifacts from a prior installation that influence it.
Thank you for guiding through whatever I need or need not do with these issues.

Please let me know whether this is just neurotic or what! Windows 7 RC on Bootcamp partition worked great until I installed a trial copy of Parallels 5.0. Even with Parallels, things seemed fine, but I did not like some behaviors of the program when run under Parallels. Using Parallels, I was leery about the issue that when I clicked on the icon of the E-drive (the Macintosh hard drive), I kept getting the message that it needed to be formatted. Certainly I was able to access the files of the MacIntosh through shared folders, and by dragging files from desktop to desktop, but I saw very little advantage of for running Parallels for what I do with the Windows programs, and I did not want to mess up the Macintosh hard drive by an accidental reformat while using Windows. Also I like the fact that if I start Windows from the Bootcamp partition rather than access it via Parallels, Windows is physically well isolated from MacOSX, I do not really have a chance to delete or mess up the Mac hard drive, and at the same time one can access the Mac OSX disk for files that might be needed by dragging these into the Windows partition. Parallels just seemed unneeded.
Now that I have uninstalled Parallels from the Mac partition and have uninstalled the Parallels programs and tools on the Windows partition, I still have a strange phenomenon that first showed itself when I had first installed the Parallels 5.0 program. Specifically, since the very day that Parallels first was installed and the bootcamp partition was used as the hard drive for Windows run under Parallels, and now even after uninstalling Parallels, the behavior of the Windows flag logo and startup graphics have been changed. A progress bar that previously did not exist before I used Parallels appears on startup, and the moving colored pieces of the Windows flag logo that are supposed to come together as Windows 7 is booted now do not appear during startup.
To my best knowledge, besides uninstalling Parallels programs, I have also removed manually all parts of Parallels that I can find from Windows, and I even excised hidden files and folders of Parallels found on the C drive. I also sought out PRL files from the Windows partition. I uninstalled and physically removed a program called Stardust (?)... Starcolor (?) or something like that, which was installed at the time Parallels was installed. Folders for this had icons of Macintosh programs. Additionally tried to remove all Parallels, PRL, and Stardust items also from the registry, but there are stubborn ones that are in the "pnp Lockdown files", and some others there that also fail to remove elsewhere. The Lockdown files that do not remove are Parallels files involved in booting, and the others are for a PRL 4600 monitor (???). I was able to remove PRL files in the "Driver Store" folder by changing permissions, and then these were able to be removed. I see no settings anywhere for startup logos in msconfig or when I search through programs in the control panel or in the Windows system folder. I have emptied temporary folders, Prefetch, and have used Windows Live Safety Center to remove stray registry files and to fix issues.
Attempts to go back to an old restore point do not work and do not get me back to the Windows 7 installation that i used to have. I reinstalled drivers for Bootcamp from the Snow Leopard disk, and finally I tried to repair the installation (by starting up windows using function keys) with at the same time the Windows 7 RC installation disk available for access of files. The option for repair when started up this way is for repair of a non-starting installation. When this is selected, it seems there is nothing found that needs to be repaired. Thus the startup for Windows still has the same behavior. Maybe I do not know how to repair an installation of Windows, and maybe nothing really needs to be changed back to the former condition. Am I just bothering with something that is just fine but which never will be identical to what it was before Parallels?
The bottom line is that even though things seem to operate fine otherwise, I feel Parallels has somehow adulterated the Windows installation, which I would rather just run as Windows without artifacts from a prior installation that influence it.
Thank you for guiding through whatever I need or need not do with these issues.

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Hi guys.
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Sorry for my poor English

ararar010101 wrote:
I am aware that using parallel windows means the RAM and processing power is share between 2 os... am I right?
You are right.
ararar010101 wrote:
People used bootcamp at the beginning, and switched to use parallels, that means the parallel windows is still from bootcamp partition.
What about my case... parallels first and then bootcamp (never activate bootcamp until now) Do i need to somehow reinstall my windows to bootcamp partition??
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Good morning,
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Can I use bootcamp if already using parallels?

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