How To Change Operating System On Laptop
Sep 8, 2012I have a laptop compaq CQ40 installed windows7. but i want to install windows XP instead of windows 7.
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How To Change Operating System Of Laptop From XP To Windows 7
Oct 10, 2011How to change a operating system from my DELL Vostro.Presently I am using windows XP and I would love to change it to windows 7
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Apr 7, 2012I have a disk (350GB) which is partitioned into 3 = 1 is just the mft files no drive allocated, c: is my operating system and d: was the operating system. I need to change C: to boot now rather than my d:. When i start up. When I start up my machine, I have to press f1 to get started then 2 win 7 shows up. I have to move the arrow down to select the second to boot up, how do I change it, please could you help. Also is there a way to change the D: not to be an operating system.
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Jul 11, 2011So the other day I wake up to log on to my Alienware M17x m1, which was running windows 7 ultimate x64 sp1. As it's booting up, I see the message operating system missing. So I grab my USB thumb drive (my cd/DVD drive does not work, thus I have to use windows 7 on USB). Tried to reinstall windows that way, but was getting some partition error of some sort. Now when I try to boot up with USB, I can't even get to the windows 7 installation screen. I get - The Windows Boot Configuration Data file does not contain a valid OS entry.
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Oct 19, 2011Suddenly my Win 7 Home Premium x64 will not boot. The system starts, POSTs then loads the DVD driver, then the screen goes black (not blank but "lit up" black if that makes sense). Then nothing. If I use Hiren's boot cd I can boot up using the "boot from HDD" option fine and Windows operates normally. System restore to a previous configuration made no difference to the original problem. I cannot boot into Safe Mode. F8 just offers me boot order options.
- Running the Windows 7 DVD I find: "No operating system is listed on the Repair Windows option."
- Running Startup Repair finds the following error: "the partition table does not have a valid system partition" which it claims to have repaired, but the error remains and Windows will still not boot.
I followed this advice:
Boot 7 dvd to system recovery options command prompt. Type: Diskpart
list vol (find the vol letter e.g C or partition number e.g. 1 for the system partition )
Sel vol C ( or sel vol 1, obviously use the correct letter or number)
act exi
My system partition was easily identified and listed as healthy so I selected it and made it active. The problem still remains exactly the same. My system is self built just over a year ago, to my knowledge has been running fine, without any hardware issues. I'm prepared to do a clean install if that's what it takes but if there is a way to fix the partition problem without that I'd like to explore it first.
Missing Operating System" Error Massage When System Starts?
Feb 18, 2012"Missing operating system" massage is coming when i start my system and i am not able to start. I think because , i had given "mark partition as active" option for one hard dive (E) in disk management when last time i opened. it did not have any data. i did not know, this will make any problem. Now i am not able to boot windows re installation dvd also. i can only take BIOS settings.
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Nov 9, 2011I tried to restore my laptop to factory default today and i must have clicked the wrong option because it deleted my Hard Disk. now when i try to start it it says Operating system not found. Is there any way i can fix this? Oh and i have Windows 7 Starter edition, and its a Toshiba notebook laptop
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Dec 11, 2011This morning my computer, Sony Vaio, was working perfectly. I turned it off and after a couple of hours put it back on, to get to my surprise the following message " OPERATING SYSTEM NOT FOUND".Is it possible to recover my information still?
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