maemo said there was a few updates to do so went to faster application mamager to do them, there was some kind of error cant exactly remember (some of the updates were speed patch battery something).
so rebooted phone and now stuck in the boot loop, light goes white/blue when power button held on then it vibrates shows the nokia logo, nokia logo vanishes then comes back then vanishes for good and screen goes black.
So Now I am trying to flash it downloaded latest flasher and firmware.
so I plug the n900 in whilst holding U it vibrates comes up with the nokia logo and windows comes up with the unable to install drivers bubble, so i click bubble and this box shows
but as a note n900 is visible in the devices
eventually a orange light appears on the n900.
tried the above process both ways round guys as in phone connected then flasher and vice versa.
According to this post, Windows driver signing can cause problems. You either need to turn on the loading of unsigned drivers or boot your computer to whole another OS. There are a few workarounds:
Workaround for "no suitable device found" problem on Windows 7 x64
Once this message appears, run inf-wizard.exe from libusb-win32 package and create an inf file for "N900 (PC Suite Mode)" and install this inf driver. Then go to Device Manager and update the driver for N900 Phone Parent and the flasher should spring to life...