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Windows 7: Woops Can't install Win7 now

25 Jun 2011   #1

Windows 7 Ultimate 64-bit
Woops Can't install Win7 now

ACER 3920, i3 processor, 1TB, DVD, 4MBs DDR3 was running Win7Pro looks like I have completely cocked up my hard drive.
The shop partitioned and put a hooky Win7 Ultimate on. I changed it using an Upgrade Professional disc, a Microsoft Partner disc. It ran fine for weeks then crashed once, I couldn’t find a virus so decided to reinstall. I formatted the D: Drive before attempting to reinstall to the C:
I went to reinstall and did a delete on the 100GB drive, I think that was wrong. After that it said I couldn’t install to any drive.
After that I put in my ultimate disc, full not upgrade, and the partitions changed I got an extra one with 100MB and System, I then stopped the error now I think. I then put in the Professional disc (an upgrade) said CD/DVD Drivers missing, but I couldn’t get the disc out to see if putting in the ACER driver disc would sort it, so I switched off.
So I intended to try and put the ACER drivers onto a usb and the go back and try the Ultimate disc and let it install along with the drivers. Afterwards do the registry change and install the Professional disc.
However on starting I now get the dreaded ‘bootmanager is missing’ do Control Alt Delete. This occurs almost straight away when I attempt to re-install anything.
So I have no idea what to do. I have read that I may be able to install from of a USB. What I want to eventually do is to completely wash the drive and remove the partition then do a re-install with my Win7 professional.
As you can tell I’m not exactly up on computers. What could be a way forward please.
Please are a whatever....I know

My System SpecsSystem Spec
25 Jun 2011   #2

Windows 10 Education 64 bit

I think I would start over, delete all partitions, create the partitions you want and when windows creates the 100 Mb system partition, leave it alone. Its only 100 megabytes and contains recovery tools etc. Windows will likely prompt you to tell you its going to create it. You won't see it unless you go into disk management and it won't affect your drive letters.
My System SpecsSystem Spec
25 Jun 2011   #3

Windows 7 Ultimate SP1 64-Bit

I agree with alphanumeric's advice.

Just boot from your Windows DVD and go for the Custom install. Windows 7 will indeed create a 100MB partition to hold the boot files, but you'll still be able to create another three primary partitions should you need them, and it is better to do it at this stage, because you can decide exactly what the partition sizes are going to be.

Windows 7's Disk Management utility is not very versatile, and for that reason, many people use third-party disk management software such as Macrium, Acronis and Paragon etc..
My System SpecsSystem Spec

25 Jun 2011   #4

Microsoft Community Contributor Award Recipient


Try a full clean & full format in command prompt.
SSD / HDD : Optimize for Windows Reinstallation
My System SpecsSystem Spec
25 Jun 2011   #5


If you wipe the HD then you'll need to leave Product Key blank, after install do a workaround to activate Upgrade version on a clean HD: Clean Install with a Upgrade Windows 7 Version

Try this first: Put the Professional DVD in the drive, restart to boot DVD, choose Custom Install, use Drive options to delete all partitions, create new ones as you wish, accept and leave alone the 100mb boot partition which places your Repair console on the F8 Advanced Boot Options.

Install to the first partition after 100mb.

Follow the rest of these steps to get a perfect reinstall: Reinstalling Windows 7
My System SpecsSystem Spec
26 Jun 2011   #6

Windows 7 Ultimate 64-bit

Thanks Guys.
Well with a little help, I installed Win7 Professional (upgrade) from a bootable USB, it all went in OK. I think my error was not booting the CD from bios, used F8 instead of F12. Rightly or wrongly I opted for just a C: Drive.

I now know how to change if necessary.

I still have a problem in when I installed the driver for HD6450 straight from the ACER web site it just didn’t work after that, eventually the mouse pointer appeared but the screen stayed blank.
As it was working fine before HD6450 driver installation I think that there is a problem and will call ACER tomorrow as I have a 1year onsite warranty.
The driver that I installed was (if anyone wants to check...Home | Acer and it’s an ACER Aspire M3920) You go Support...Drivers and Downloads...then it’s in Thai but the third writing down...then ASPIRE, then M3920.....thanks
VGA Driver (HD6450)

141.6 MB


So the graphics specified for this computer is ATI Radeon HD6450 1GB dedicated Graphics Memory (DDR3) Microsoft Direct X 11...whatever that is... I’m fairly sure that it was the correct driver.
I have learnt a lot by reading on this site........................thanks
My System SpecsSystem Spec
26 Jun 2011   #7

Microsoft Community Contributor Award Recipient


On this Acer site HD6450 & a HD6450M are listed, are you downloading the right drivers.

Acer Support: Downloads & Support Documents - Desktop / Aspire / Aspire M3920

Have you download the Acer updater.
My System SpecsSystem Spec
26 Jun 2011   #8

Windows 7 Ultimate 64-bit

Hi, no haden't. but I have just looked now and looks like the spec is different.

I guess I should explain that I live in Thailand and it's a Thai Spec. The site to look at is and then follow what I said above. Sorry a bit of it is in Thai....but it's the third one down in the Thai list.

So Support..... Drivers and Downloads....then third one down on the list.....then ASPIRE....then look for M3920.

It seems the correct one to me...but locks up the computer...exactly the same as when using the ACER Driver CD Installation disc.

Now when I installed a few weeks ago and used the Driver CD everything went OK...thats why I think something is a little broken. I just wanted someone to clarify that it is the correct driver.

I'll call ACER tomorrow...actually they are quite good at replying over here.

Actually i have just looked again and it maybe the wrong one as I checked the spec and it's the Radeon card that I have................
My System SpecsSystem Spec
26 Jun 2011   #9

Microsoft Community Contributor Award Recipient


On both Acer sites HD6450 & a HD6450M are listed, are you downloading the right drivers.
My System SpecsSystem Spec
26 Jun 2011   #10


The Display driver is left off the list because it is either in the installer or via optional Windows Updates: Automatically get recommended drivers and updates for your hardware

Win7 drivers are automated. Use the drivers given by the installer or quickly updated via optional WUD.

If this is not sufficient, go to the AMD Support Downloads drivers webpage to browse for your model.
My System SpecsSystem Spec

 Woops Can't install Win7 now

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