It all started with accidentally installing the wrong audio driver which somehow caused my computer to stop booting and some strange BIOS messages.
All of this was eventually solved. My computer returned to boot successfully and just to be on the safe side - I decided to reset the BIOS to its default settings and made a clean install of Windows (which I felt I should do for some time anyway).
I disconnected my two other hard drives, formatted the drive which is a dedicated system drive and re-installed Windows XP Pro. Installed chipset driver, then NVIDIA graphic card driver and then all other drivers from the ASUS webpage for my ASUS P5Q PRO board.
So far so good. All is running nicely.
I then powered off my computer, disconnected it from electricity and re-connected my other two hard drives (which store personal data) to their power cables and SATA connectors.
Powered on my computer.... no boot.
Thinking it somehow had to do with re-connecting my other two hard drives, I decided to try and isolate the problem. I disconnected both data drives and left only my system drive connected. powered up - and all was good.
So... Powered off agan, connected only one data drive (out of two) and powered on. It would get past the ASUS page but Windows wouldn't boot up. I pressed DELETE to get into the BIOS settings and tried looking around what might be causing the problem. I found where both currently connected drives were listed and the system drive was listed as #2, while the data drive was listed #1. I switched between them - making the system drive #1, then pressed F10 to exit BIOS. Windows booted up normally!! Horray!
I happily powered off, connected my 2nd data hard drive, powered on again... and...... nothing. No Windows, no ASUS screen, no error message, nothing. The computer screen remained black. Practically in tears I disconnected that 2nd data drive again confident that I'd at least be able to get into BIOS again and see what might be making trouble. But even after removing that hard disk, the situation remained the same. Black screen. I then noticed that the red illuminated power switch of the LG computer screen was flashing on and off - which usually means that it's on some kind of standby mode. It was as if it wasn't getting any signal from the computer. Tried shutting off, disconnecting and re-connecting the screen cable - but same results. In fact, when leaving the computer on long enough... I even hear the Windows startup chime is heard through the speakers. When powering off - Windows sounds off its log off sound. So it seems as though Windows is booting as it should behind the scenes, but I suddenly lost connection to my computer screen! Could this be a graphic card issue (suddenly!!)??
Any suggestions (please...)?
I've been messing with my computer for two days straight trying to get it back to its normal self.
Motherboard: ASUS P5Q PRO
Graphics: Nvidia Geforce 8600GT
Screen: LG FLATRON W2343T
Edited by adifrank, 04 August 2010 - 01:12 PM.