Solved Windows can't install.

[Samdejuice]

Hey guys i'm having some problems installing windows 7 x64 on my brothers laptop.

It's a toshiba satellite c855d-172.

I can't press next, when i choose a partition. Any idea why?
It says the disk is a GPT-type. What is it and how do i change it?

Thanks

Pic of the disk:
View image: 2014 03 21 19 26 43

 

[HarriePateman]

Format old disks. Then try!

 

[Samdejuice]

It's ok to format the system disks?

 

[HarriePateman]

Yes, Format means everything on them disks will be erased.
If you have anything you want to keep on them, back them up. Or move them to a memory stick.

 

[gregrocker]

If it's a GPT disk then you need to install to UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with - Windows 7 Forums.

Or if that gives you problems you can Bypass UEFI to Install WIn7 normally to an MBR disk.

 

[Samdejuice]

I deleted all the partitions and restarted the install and now it seems to work. Thanks guys!

 

[HarriePateman]

I deleted all the partitions and restarted the install and now it seems to work. Thanks guys!

No worries mate, Glad i could help.

Mark as solved please!