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Cannot install Widows. 7 after removing windows 8 and installing Ubuntu 13.04.

Last response: in Windows 8
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December 16, 2013 6:34:51 PM

I have an HP Pavilion 17 with Windows 8.1. Hated Win. 8.1 so installed Win. 7 Ultimate. I ended up with a bad key for Ultimate so wanted to try Ubuntu. Like an idiot, I went over the top of 7 with Ubuntu 13.04. All was fine, but where we live I have a u.s. cellular usb modem for internet access. When I plug in the usb modem nothing happens. Nothing at all. So no internet for me. Which is really why I use the laptop anyway. I wanted to give up and just re-install my good copy of Win. 7 Home Premium-but when I got to the partition to install it on, it said I could not install it on that partition. So I deleted the partition and now have un-allocated space, but it still won't let me install 7. The error says this: Windows cannot be installed to this disk. It has an MBR partition table. On EFI systems, Windows can only be installed to GPT disks. Really? 7 was it previously with no problem. Ideas to resolve this problem? Thanks, Linda
a b * Windows 8
December 16, 2013 6:42:03 PM

It makes me sad when people hate Windows 8 :p  (I get it though)

Anyway, I haven't done an installation of Windows in a while, so my memory is pretty fuzzy, but:
1. Have you deleted all partitions? Delete 'em all.
2. Then create a new partition using the unallocated space.
3. Install Windows 7 onto that new partition.

That should do the trick.
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Best solution

December 18, 2013 5:27:06 PM

Wiping the disk did not do anything for me. The problem is what windows has done in 8 that is not compatible with 7. The UEFI is the major problem. The way I found that fixed it was this:
Put your windows 7 disk in the drive
At first installer screen Press Shift + F10 to open a Command Box, type:

DISKPART
LIST DISK
SEL DIS 0 (after confirming Windows 7 target HD #)
CLEAN
CONVERT MBR
CREATE PARTITION PRIMARY SIZE=102400 (for 100gb partition, adjust as desired)
FORMAT FS=NTFS
ACTIVE
EXIT
Then I could continue installing windows 7 and have had no issues. Working great!
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