Vista Tutorial - mbr possible damage?

Hello everyone, I believe i have a hdd problem, I have had dual boot on my system Hp 2710us 160gig hdd, but i changed it back to single boot, Yes i used Windows 7 as the other os, it was nice but ie8 hung too much. anyway after reconfiguring ha ha, now ive only got 149gig hdd what happen to 11 gig. I took this screen shot from Paragon hdd manager. Any ideas? Also could i erase this mbr and reinstall os and get full hdd back? Would it fix this? Ive tryed all the mbr tools.

You partition size has somehow been decreased. Also, after installing Windows 7, a new partition of 200MB is created storing the boot records which is also the active partition.

You can enter Disk Management under Control Panel - Administrative Tools - Manage Computer - Storage , and see if you have any extra unallocated space. If so, you can resize your partition to use the maximum space available.

Now, if you want to delete the extra 200MB partition completely, I'm afraid you will have to run a repair from Vista DVD after that to fix the boot loader (you will need to manually set active your big partition, now the small one (200mb) is active(bootable))

Thankyou for your advice, I dont have any unallocated space in manager so i was wondering what happened to the other 11gigs. i dont mind formatting the disk, but ive done once already and the max size of partition remains at 149gigs, i was thinking something is telling the format process that i only have 149gigs. Could i use some kind of wipe tool in paragon hdd manager to erase from sec 0 to the end, would that help?