While deleting a virus (which name I can't remember as this was a month ago) I think I have deleted some windows XP boot files. I am not 100% sure that it was me that screwed up the boot as while having the virus windows wouldn't always boot.
What happens when I turn on my computer: the manufacturer logo comes up, after that a few seconds of blank black screen and then computer restarts. So no Windows loading screen. This is different than what I had with the virus.
I've tried to fix the boot first by following this tutorial:
link. It went smooth but this command wouldn't work CHKDSK /R /F. I exited like the tutorial said, but the problem didn't go away.
After that one failed to work I tried the GeekstoGo How to repair Windows XP. The repair went well until the computer rebooted and went to the blue windows installation-looking part. Now it asks for NVidia Network Bus Installation Disc, this wouldn't be a problem if my computers motherboard would have PS2 ports (as USB ports haven't worked after the repair install rebooted), so I have no way to navigate in the installation anymore.
How to continue from here? Should I just shut down the computer, or will it cause even more harm?
Fujitsu-Siemens Amilo PI 3830
Videocard : GeForce 9600 GT
Processor : Core 2 Quad Q8200
Memory : 2 x 2048 DDR2
Soundcard : 7.1
Operating system : XP Home Edition SP3
Thanks for reading!