XPS M1530 running Windows 7 RC (Build 7100)

On an XPS 1530, there are 3 places/way you can turn on/off the 355 BT module, and all 3 have to be on for it to work (annoying?):  1) BIOS, 2) Physical Switch, 3) Fn+F2. 

I would have tried to sort it out in this order:

1) Check that the BIOS sees the BT card.  If not, follow NorthVandea's link to reinstall the BT module.  If it sees it, then proceed.  If not, BT radio=dead.

2) Check in the BIOS to see how the physical switch affect the BT radio.  Set it to be turned on by the physical switch.

3) Assuming 1 is a yes, and the physical switch is on, then try reinstalling the software.  I have read, w/o verification, that's because BT was not written as part of the kernel or core drivers by MS, Windows Device Manager does not always recognize BT modules w/o the software. All Windows BT drivers were written later by WidComm or Toshiba (the Dell driver is written by WidComm).  Anecdotally, I had similar problems with an older Dell D400 where the XP Pro Device Manager didn't even know what HW it was until I installed the driver/software, so there may be some truth to it. 

If that doesn't work, then I am out of ideas.

Much luck.

I have just upgraded from Vista 32bit to Windows 7 Pro on my XPS 1530.  I also am having problems with the touchpad being eratic and the scroll function not working as before. 

I have read many comments about posted solutions.  Where can I download the drivers mentioned, ie. Dell R228446.  Many have mentioned downloading Vista 64 bit drivers.  Will that be compatible with my system.  Intel Core2 Duo CPU  4GB 2.00GHz  T7250  32 bit operating system

If you are using a 32-bit operating system then you should use the Vista 32-bit driver for the touchpad.  You can download it from the Dell website.  It should be called R166314.  After you install the driver the touchpad should regain its scrolling abilities and be more reliable.

64bit drivers probably will not work on 32-bit systems. If you go to dell's support site, you can get the 32bit Vista version or should have come with the CD for your system.

Also, as an aside, I am curious for the choice of 32bit OS instead of 64.  My understanding is that a 32bit Windows OS won't utilize all 4GB that you have effectively.  For instance, Win7 Pro combined with your processor can use Virtual PC and XP mode (downloadable free from Microsoft), which would greatly benefit from more addressable memory.

I don't think you can "upgrade" from 32-bit to 64-bit.  You would have to wipe your hard drive and install a fresh 64-bit OS from scratch.

Thanks for your input.  Upgrading an OS is an area that I have not  ventured.  How costly and involved of a transition would that be? 

The cost is a few hours time. 

Changing from 32 to 64 bit means that during installation, you will be forced to select the "clean install" option. The installation program will move 32bit windows to the Windows.Old subdirectory, and none of the current settings would be kept.  All programs need to be reinstalled (the newer OS won't know of the previously installed programs, even though they may still on the hard drive). I use http://ninite.com/ to get the most popular programs/utilities, but commercial software will need to be manually reinstalled.  Additional pain is that all those programs' settings may need to be manually set again.

Your user directory would still be there, but back up anyway. 

Also watch out for a bad policy decision on MS part regarding directory sharing.  I am not sure if it affects Win 7 Pro edition, but in the Home Premium edition, depending on how you answered certain questions during installation, the entire "c:\users" subdirectory can become shared by default.  This is particularly bad because each user's personal directory inherits all the characteristics from the parent C:\users, i.e., your subdirectory is shared with the world by default, and no amount of manual overriding would do anything to change it.  You have to actually "unshare" the c:\user parent directory to make individual directory private or public.  This has been posted on MS forums for a while and no changes are being implemented at this point.  Caveat users.

Thanks for tthe help.  Reinstalled the driver suggested.  All is working again with my touchpad!

I would like to thank all of you for this information i will be upgrading my laptop asap & will let you all know how everything goes.

I had the same problem with my bluetooth after installing Win7 32bits on my XPS M1530. I solved it by installing the R140135 driver.

Open the driver to unzip the file downloaded from dell site. The following message pop up "turn on bluetooth". Press cancel.

Then go to the following folder:

C:\DELL\drivers\R140135\3100_216\Win32

And  run the "inst" application. Then run the setup. W7 will find the bluetooth device and update the driver.

Finally run BTW.

Done

I am just reading this old post as it is relavent to my situation. I have installed W7 on my M1530 with tthe A12 Bios and it will not take any of the invidia drivers. W& works fine until I install the drivers and then it will not boot up. It just has a dark screen and I have tried to reinstall several times.

Any suggestions?

Well, I just got hte invidia driver to work and then I loaded Office 2010. Now it blue screens. Any issues with 2010 office with these drivers?

I ran Office 2010 beta without problems using the nVidia driver ver 260.89 on one XPS 1530 with 8400M GS (128M VRAM) and another with 8600M GT (256M VRAM). Both systems have Windows 7 Home Premium 64 bit (final) w/4G RAM. Don't have Office 2010 final.

It was short lived. I cannot get any of the drivers to work with this. Every time I try, it just goes to a black screen. I have tried all of the drivers and even switched to 32 w7 to see if that made a difference. After reinstalling windows eight times today, I am spent.

Anyone else have this experience?