Desktop "B": Pentium IV on P5S02-VM; RAM 1x1024MB; HDD Samsung 160GB; Video card GeForce 8400GS 512MB; OS Windows XP home edition; 2 years old.
The issue is on desktop A: the BIOS detects everything right but as it tries to boot from the HD, a black screen with blinking cursor on the top left corner shows up and nothing happens.
I can boot from the original XP CD but after the first checks on the HW it goes on the same black screen, right before loading the screen in which you choose whether to install or restore windows; I can't even boot the safe mode by pushing F8.
Now things get weird:
-by connecting HD "A" into desktop "B", the OS is correctly loaded and everything works just fine, so I guess it is not a SW issue.
-by connecting HD "B" into dsktop "A"...the OS is correctly loaded and everything works just fine, so I guess it is not a HW issue.
I have the feeling that something's wrong with deaskop A video drivers: it gets stuck right when the video card should kick in and besides, during the "crossed tests" everything is ok just using the basic VGA; for this I have uninstalled ALL ATI drivers and programs while logged in through pc B, but it still doesn't boot using pc A.
It doesn't make any sense to me (I'm not considering the possibility that desktop A and HD A are asking for a divorce)...any tip?
Here's what I've already tried:
unplugged and plugged back in everything,replaced the IDE flat with a brand new one, BIOS reset through its jumper, booting the safe mode by ticking it in the msconfig console while using PC B (doesn't work either), all possible combinations of the two RAM sticks into the three slots, running some bootable diagnostic utilities for HD and RAM (no errors nor warnings were detected), several punches on the case.
Thank you in advantage!