I have a hp laptop nx9105 which lately has been having problems, It will lose power for no reason, and it will show a blue screen when trying to activate some programs, after ringing hp they told me it was a hardware fault and it would cost £375 to have a look at it, but the laptop is only worth about £400 so this would be pointless.

I have performed tests on the hard drive and its fine, I have taken out the RAM and swapped it round and that didn't help.

I have tried reinstalling windows but the laptop loses power during the setup program, I was wondering if it was a problem with the graphics driver which is a nivda GeForce 4 440 go 64M. But I have tried reinstalling this driver and it has made no difference.

The blue screen of death messages vary, some have no reason, others are because of a ndis.sys failure, others occur due to IRQL NOT LESS OR EQUAL message.

It has also lost power during a RAM test, but as I have swapped the RAM, I dont think this is the problem.

I am fairly sure my windows installation is currupted, but as I cannont reinstall or repair without the laptop losing power I cannot be sure.

If any one knows how to fix this problem or what it could be please let me know as I feel I have tried everything I can think of and all I want to do now is stick my laptop so far up Bill Gates **** it could poke out his nose!

I am thankful for any advice.