Hello, first off let me say this is a wonderful site and in sadder we couldent have met under better terms . So this is the problem. 1 year old custom built pc. Amd 250 3ghz dual core, gigabyte Ga-ma78gm-us2. Mobo original videocard: 7600 gs nvidia new card 8800gts nvidia. After installing the new card it made a high frequenzy beeping sound. So I immediatly shut it down and switched the videocards back... Only to hear a lowe freq. Buzzing sound... So I took that card out as well, and turned it on, again it made a beeping sound. I can hear all the peices starting up but there's no display. Can anyone tell me what parts I killed .