linux to windows 7 install problems

hi all. newbie here, i have a relatively not bad self taught knowledge of windows.

right, i have purchased a toshiba NB250 netbook with linux installed. ive gone to install windows 7 from disk and it comes back saying there is not enough room to store temporary files. which after searching up means that the disk is formatted to linux and windows cant read the disk.... so i downloaded a program called rufus to make a bootable usb drive. in the mean time while i made that i thought i would swap the 250gb hd with linux on and put a spare 40gb hd in the netbook to use to try this bootable image on. so i put the 40gb hd in and powered up and it already had an install of windows 7 on it and booted up nicely. so i thought what i would do was try the 250gb hd on my home pc and install windows 7 through that. i then downloaded a program called test disk that would read the linux formatted 250gb hd on my home pc. it found it and i wiped the disk clean. i then made an entire partition of NTFS formatted 250gb HD and then proceeded to install windows 7 to it. all installed nice and fine and booted up via my home pc. i then put the 250gb HD back in the netbook and proceeded to power up. the netbook proceeded to the follwing black screen with...

"error: unkown file system entering rescue mode..... grub rescue> now after looking up i have found out that grub rescue is some kind of rescue program for linux? if so then how come there are still some linux files on the HD??? i wiped it and formatted it to NTFS?

i done some searches regarding the grub rescue thing and tried to boot past that but to no avail??? any help appreciated. :)

Well, it won't work like that :)

Windows needs drivers related to the hardware, and is not suitable to move to dissimilar hardware.
Since you are at an early stage, just re-install Windows while 250GB HDD is in the laptop.

I believe you could have installed Windows in the first place if you used a tool like GParted and shrunk the Linux partition some.

Anyway, download and create bootable media of Partition Wizard free. And boot laptop with it while having 250GB attached. Delete any partitions on it, and create a single NTFS partition (optional). Then boot with Windows installer and install as usual.

so put the 40 gb hd with windows 7 back in the netbook and then connect the 250gb hard drive up to the netbook and install windows through it that way?? the drive is a 2.5" sata drive, so would have to get a 2.5" sata to usb cable to plug into the netbook?? would that work that way?

trying to install windows on the 250gb disk but it goes straight to the GRUB recovery screen. the netbook doesnt have dvd drive so ive tried making a bootable usb drive with windows 7 on, but to no avail yet. i have purchased a usb optical dvd drive so hoepfully i can boot/install from that. either way i have no way of getting back onto linux as i have formatted the drive now to NTFS. there must be a small part of the linux grub recovery lurking on there???

linux was zorin? if that means anything?

just to confirm, i want rid of the linux OS on the HDD in favour of windows 7 only.

Select USB from the Boot Menu or set it as first boot device in BIOS.

Also read Clean Reinstall - Factory OEM Windows 7

You may well have to use something like a Partition Wizard boot CD and select to wipe that 250gb HDD with zeros or ones to avoid problems... Just doing a format alone is not good enough to clear out what is left of GRUB.