Windows takes time to install

hello everyone. i just bought a hp dv4-5008tx laptop.
the configuration is a follows

Processor Core i5 (2nd Generation)
Clock Speed 2.5 GHz
Cache 3 MB (Smart Cache)
Expandable Memory Up to 16 GB
Memory Slots 2 (Unused Slots 0)
System Memory 6 GB DDR3
Hardware Interface SATA
RPM 5400
HDD Capacity 640 GB
Dedicated Graphics Memory Type DDR3
Dedicated Graphics Memory Capacity 2 GB
Graphic Processor NVIDIA GeForce 630M



here is my story. i deleted all the partitions on it because i wanted to install resizing according to my need. i ended up creating dynamic drives. i searched the forums and found the solution to that using pw 4.2
now i want to install windows on my640 GB hardisk which doesn't have any partitions. its unallocated space. i know how to do it but i want to ask that do i need to modify any MBR?
i tried installing windows on dynamic drive and it took a long time to install (1 hour). why it took this much time?

Partition Wizard Bootable CD allows user to manage partition directly with partition manager bootable CD.

Create the bootable cd. Works perfectly everytime. Make your drive basic, not dynamic. You should not have to modify anything. I always set the install partition active, so no system reserve partition is created.

Dynamic disks are meant to span partitions over multiple HD's. Convert the HD to Basic: How to convert dynamic disk to basic disk with Partition Wizard?

Then boot the installer and follow these steps to get a perfect Clean Reinstall - Factory OEM Windows 7.
You can during install use the Custom install Drive Options to partition as you wish, format and install to first install partition.

thank you all for advice i read the tutorials on the site and everything is back to normal.