Help please

[NoW4yOut]

Recently I built my new system and I used my old hard drive. Everything seems to work correctly in the BIOS and everything is recognised, my hard drive is set as the primary master and temperatures are fine. I save and exit, try to restart and a I get a blue screen for a second then it restarts itself. Is this because of my old hard drive and the preinstalled version of home on it? I don't have much experience in this so I have no idea about transfering hard drives. I'm not too sure it isn't a hardware problem but I cannot see why it would be and have double checked everything.
Thanks.
Specs:
Athlon 64 3200+
A8N SLi S939
PNY Verto GeForce 6600GT PCI-E
1Gb DDR400 PC3200 Kingston

 

[Mr_Threepwood]

I think windows doesnt like it when you put all new hardware in and try to boot of an old copy of windows with a different hardware profile. Is reformatting an option, or can you not do it because of lack of CD or need the data on your old drive?

 

[NoW4yOut]

I'd be ok with formatting, but I wanted to become more certain before I did, just incase it is hardware related or can be solved otherwise. I do lack an XP disk, mind. Hence pre installed.

 

[brady]

The reason you are experiencing problems is b/c of driver conflicts with the new hardware. You will need to reformat. I have recently heard that it IS possible to perform the "Repair" option to fix this issue, However I have never had any luck with doing it that way. I have always just reformatted the drive.

 

[NoW4yOut]

Are you certain it is not a hardware issue? Like I said everything responds fine and the BIOS recognises everything. I can't see the blue error because it is on the screen for like half a second. But I know it says drive.
I decided I'm going to buy a new hard drive, as I don't want to loose the data on this one.