Are all of the disk partitions using the NTFS file system?
A screen-shot using Disk Management will show the partition information for your drives.
Start --> Administrative Tools --> Computer Managent --> Storage --> Disk Management
If any partitions are NOT using NTFS format, this is probably part of the problem.
The AS SSD red Bad comment for any partition means that it is not 4K-aligned.
This should account for about 20% lower hdd performance, but shouldn't cause your system to lag.
You can avoid running the WD alignment tool if you delete a partition and then use win7 to create and format a new partition.
You must backup the complete partition before you you delete it!!!
Go to WD Support / Downloads to download their free partition alignment tool (PAT).
With a WD hard drive installed in your system, the PAT software might work on your non-WD drive.
Note from the WD web page:
Perform the following tests after you have posted the screen shot: Critical: Although this program is designed to retain all data on any affected AFD, the program may be Data Destructive if interrupted while operating, which could result in the loss of all data on the affected AFDs. Please make sure to back up all data on attached AFDs prior to running this application.
- start Resource Monitor to track average cpu usage while testing and make the window taller by dragging the other headers toward the bottom of the screen. Watch the cpu usage for any abnormally high values for each test.
- copy some large files from one partition folder to a new folder on the same hard drive, note how long the copy operation takes to complete.
- repeat step #2 for the other hard drive.
- repeat step #2 by copying from one hard drive partition to a partition on the other hard drive.
- repeat steps #2 through #4 and open your browser shortly after starting the copy operation.
Clear as mud?
sample Disk Management screen-shot: