Hello,I bought a used computer and it has a squeal comming from the tower.I`m running windows me on a gateway select 1000 cs with memory=128-mb 133/100/66-mhz 64-bit 4-clock 16x8 sdram dimm,MSI Athlon 1-GHz mother board,250-watt 3.3 volt power supply,Creative Labs Audio PCI 128D digital sound card,nVIDIA Vanta TNT-2 16MB AGP video card.What happen is when it starts the squeal comes and it loses the monitor,or when its been on a while it does the same thing.I removed all the cards...modem,audio,video and the replaced them one at a time.All was fine untill I put the video card in then the squesl was back,so I replaced the video card with a new nVIDA GeForce MX 4000 AGP 128 MB DDR and it squealed.So I took out the AGP card loaded the drivers for a nVIDIA card from another computer which is a PCI video card and got the same squeal.I`ve checked all the fans and they are fine.So whats up...mother board?If so what would be a good replacement?Any other ideas?Thanks