have you tried to boot into safe mode? If you will do that and then take note of where it dies when loading and let us know.

there are many different programs available to do that. google file splitting software. i do not have a recommended program.

If you are wanting to reformat your hdd and install from scratch you will need that disc. Nothing else you can do without it.

Great free program.

A great program to install and run is Malwarebytes. I use it all the time for virus removal.

Looked into this a bit more and looks like BIOS update will probably be required.
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q283649

Have you tried replacing your old stick with the new one? run on the new 256 alone for while to see if you have any problems?

go here on your working computer and place your nonworking computers serial number in the text box. this should give you a list of drivers you can download....

I have been running Ultimate since its release. in the beginning i did have problems with a blue screen. i upgraded RAM from 1g to 2g and have not seen a blue screen since. has been over a year

have you restarted your computer?

so that let you get your files?

Have you made sure that this nic is enabled?

crazy question but have you taken ownership of the files?

here is a long and hectic procedure available to restore the registry so that we can use System restore to roll back out system to the time when it was working fine !!
How to recover from a...