I a having a laptop-HP pavillion dv6000,RAM 1gb and OS-32bit with window 7 ultimate,a problem of colourisation.i mean the display colour has change like a spray a of colours(green,deep blue)on the normal colour and even change the entire system display.

SOURCE: hp pavillion dv6000 laptop

Video circuit failure is well known on the DV6K Series.. Weve repaired a few and HP is offering extension to warranty for this issue. If they refuse to repair contact us back.

SOURCE: HP pavillion DV6000's battery charger beep sound

try buying a new battery

SOURCE: blue screen with 4gb, OK with 3gb of RAM on 6720s

A 32bit OS and Processor is able to Identify and work with upto 3GB of memory.
That may be the cause of the issue
Even if any computer has more then 3gb of ram it will showup only upto 3gb.
if you install 4gb or more then also it will not show up.

.........and second reason, may the ram that you are using are not identical or one of them is not working properly.
Check the specifications of the ram and also try using one a time.

Thanks and Regards

SOURCE: how to enable bluetooth on hp pavillion laptop

Hey there,

If your particular model of HP has the bluetooth installed from the factory, turning on the wireless switch on the front left edge of the laptop enables the bluetooth, as well as the wireless LAN. A bluetooth icon should appear in your taskbar, near the clock, when bluetooth is turned on. Most of the cheaper versions of the DV6000 series do not come with the bluetooth module installed. The module can be ordered from HP Parts and installed by the end user, if they have a little computer know how. You would then download and install the bluetooth software pack that is available on HP's support website.

Hope this will help to resolve your issue with Bluethooth..

Cheers!!!!!
Vivek