ESATA & Bios on Elitebook 8530w

HP Elitebook 8530w (GW680AV)
Windows 7 Ult 64bit
OS installed on 2 x internal drives via Raid0 
I'm having a very frustrating time with eSATA!
1st off I hadthe built in eSATA interfcae working well with a single eSATA external drive, I often find it pays to initially install external drives via USB and then switch over to the eSATA cable.
2nd I bought a Dual SATA 2.5in enclosure which has a built in Raid facility with both USB & eSATA interface (Startech.com S252U2ERR) works very well via USB but when connected via my laptops built in eSATA interface the RAID0 setup gave lots of problems, It couldn't cope with large file transfers (approx 3Gb files) It would start off ok indicating >100Mbs but would very quickly reduce to <2Mbs worse than USB
Via USB the same transfer would continue without problem at normal USB2 speeds
I never had this problem with my single eSATA external drive (no raid) but then transfer speeds were lower 
Its almost as if the built in eSATA interface on the laptop falls over when the transfer gets too fast!
I've updated all the drivers via HP and when this didn't work I updated all drivers via the Intel website (Intel storage drivers)
and installed 'Intel Rapid Storage Technology' But still doesn't play ball
3rd I bought a 2 port eSATA express card adapter from Addonics, installing this gave some grief I saw a good number of blue screens!! but I'm now good after installing the Port Multiplier Compatible Driver option, And with the StarTech Raid0 external Drive it works very well and gives some impressive transfer speeds. But still I've got to be careful when connecting and removing.
4th I also did a BIOS upgrade to see if it would help, and discovered that the default setting for the built-in eSATA interface in the Bios was 'Disabled' !!!! This caused me a lot of grief but luckily I checked. Regardless it still didn't help.
So for HiSpeed Transfer rates my only solution is the additional eSATA ExpressCard and not the built in eSATA interface
So still not sure where the issue lies, Intel or HP? 
Intel Driver resources:
http://www.intel.com/p/en_US/support/detect/?iid=dc_iduu
Dual 2.5in SATA Raid Enclosure with eSATA/USB interface
http://www.startech.com/product/S252U2ERR-25in-Removable-eSATA-USB-Dual-SATA-Hard-Drive-Enclosure-wi...
Dual eSATA express card adapter
http://www.addonics.com/products/host_controller/adexsa6g-2e.asp

Hi,
          If you check the below forum link, they have mentioned that for this laptop you cannot reset the BIOS password.
http://h30499.www3.hp.com/t5/Notebook-HP-ProBook-EliteBook/HP-EliteBook-8530w-Reset-bios-password-do...
If you are unable to logon due to BIOS password, mention the code which pops up after entering the password incorrectly 3 times where i can try getting a code for the same.
"I work for HP."
Please click the "White Kudos" star to say thanks for helping.
Please mark "Accept As Solution" if my help has solved your problem.

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              If you check the below forum link, they have mentioned that for this laptop you cannot reset the BIOS password.
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    "I work for HP."
    Please click the "White Kudos" star to say thanks for helping.
    Please mark "Accept As Solution" if my help has solved your problem.

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