I have had a look at your comments, and re-checked out my settings etc. but its very glib to say thats its all down to the hardware, which in my case it is not, the system did work ok with xp, and with over 17 million problems listed on google, its a bit far fetched to say they all have hardware problems.
How do you actually decide which is the latest driver for storage controllers?? I am not a computer technician, again a glib answer of techno babble.
If yours work well great, but I wonder many actually do?
I just wish MS would do their job better and more professionally, rather than dumping it on the unsuspecting public to do their beta testing.
I didn't say it's down to hardware. I said it
sounds like it's hardware. I don't know the specs of your machine, and that's why I suggested to let the vendor/manufacturer handle this IF your machine is still under warranty.
Did you try steps 1-6? Any changes?
What are your computer's specs?
How much RAM does it have?
What type of hard drives are you using (SATA or PATA)?
Are you using an anti-virus, if yes which one?
Did you try turning off active protection/scanning while transferring large files?
Anyway, to see what matrix storage manager you've got:
press start, type "device manager" and run it.
There is a field called "IDE ATA/ATAPI Controllers", expand it.
Find the AHCI line, double click to open its properties, go to the "Driver" tab.
There you can see the date, version and source of the driver.
To get a more up-to-date version:
Go to the website of your computer's manufacturer (if it's a bundle or laptop), or the motherboard's manufacturer, and look for a Matrix Storage Driver/Controller or AHCI controller/driver for your model and follow the installation instructions provided.
If there is no AHCI conrtoller, then simply installing it should do the job.
Now, all of this is only relevant if your hard drive is a SATA hard drive. PATA (or IDE) hard drives don't use the AHCI/Matrix Storage controller.
To tell the difference between SATA and PATA just google image them, you'll see the difference in the cables.
Check the pictures to see what I'm talking about in device manager.
Also, it might help to know that windows will try to write stuff in parallel on the hard drive if you do multiple file transfers at once. It's faster to do them sequentially (one by one) because of the way the hard drive operates, or to mark all the files and directories you wish to transfer together and move them as a group (which does it sequentially, too).
Please let us know if this helps, and if not try to provide more details about when and how the problem happens. I've only ever experienced slow disk-writing speeds when trying to move multiple files in parallel, and that happens just as often in XP as it does in 7.