About a 1.5 months ago my graphics card died (XFX Geforce 6800). I was waiting for a replacement that never came from the manufacturer, so my computer was left unplugged for atleast a few weeks.
I ended up ordering a BFG 9800 GT as a replacement card about 2 weeks ago.
After installing the new card I was unable to get any picture on the screen. I eventually disconnected every internal component (TV tuner, Wireless card, and sound card) as well as my IDE optical drives and a SATA drive. With just one IDE drive and the graphics card in place I was able to get a picture on the screen which said my CMOS settings had been reset to their defaults.
So in the CMOS setup screen I changed thing back to the way I had them before (IDE HD priority boot) etc. Shut down the computer and reconnect all the internal components. Although all the internals were connected, they were not in they're proper spots (things weren't secured inside the case). I start up the computer and everything works.
Under the impression everything is working. I shut the computer down and disconnect everything so I can route the wires in the case (it's a tight squeeze in a HTPC case). Once everything was reconnected and secure in their respective locations I booted the computer up.
Only to find out that something isn't working properly. Everything 'appears' to be working inside the case, the optical drives open and close, the IDE and SATA drives spool up, the graphics card fan is running, and the lights on the wireless card light up. But I'm not getting any picture on the monitor.
I've spent literally 2 weeks trying to figure out what the problem is. I know the graphics card works, when I unplug everything inside the case, I can get in to the operating system (assuming I pull the internal battery and short out the CMOS to reset everything). I've even had everything hooked up outside of the case and got things working (I was able to download the appropriate drivers from BFG's website).
But once I spent 30 minutes routing wires and securing everything inside the case nothing works.
I apologize for the long post - but I figure a step by step process seems necessary.
BTW: there are no blown capacitors and the internal battery is fully charged.
AMD X2 Athlong 3800
Gigabyte GA-k8NF-9 motherboard
650 watt PSU
edit: With regards to the CMOS here's what happens: if I unplug the PSU, remove the battery for 10 minutes, I get the "CMOS reset to defaults" message in DOS. Once I reboot (without removing the battery, unplugging the PSU, etc) I get nothing. That's why I was thinking it had something to do with the CMOS.
Edited by flicksterr, 16 October 2009 - 12:07 AM.