Here's my situation: A couple few days ago, my G5 just randomly froze - I could move the mouse, but I couldn't drag anything, all progress bars stopped, even the progress bar animations stopped. I rebooted, and it worked fine for around 15 minutes, then froze again - I tried dragging something, and left it. About 15 minutes later, it unfroze for a second, and the window dragged to where I put it, then it froze up again. I thought it might be a failing hard drive, as the boot drive was quite old, so I reinstalled on a different drive, copied over all my preferences, and tried again. It seemed to work for a while, maybe a couple hours at best, but then it froze again. I got it to boot again, ran Onyx, tried repairing everything Onyx could (permissions, clearing caches, EVERYTHING) and rebooted - still no dice. At this point, I can't get it to boot off either drive, and when I try to boot from the CD, it gets to the same point as the drive: Gets past the grey apple + gear, goes to a blue screen, I get a mouse that I can move, and then nothing. I waited almost an hour for it to boot, and from the CD, it got the the 'preparing installation' point, but then seemed to freeze again. I took the entire G5 as apart as I felt comfortable, cleaned off all dust, looked for any leaks from the cooling system, double checked all plugs and cables, then reassembled and tried booting again - still no luck. Here are some specs I copied before I tried the first re-install: Hardware Overview: Model Name: Power Mac G5 Model Identifier: PowerMac7,3 Processor Name: PowerPC G5 (3.0) Processor Speed: 2.5 GHz Number Of CPUs: 2 L2 Cache (per CPU): 512 KB Memory: 2 GB Bus Speed: 1.25 GHz Boot ROM Version: 5.1.8f8 Hardware UUID: 00000000-0000-1000-8000-000D9358FDA0 ATI Radeon 9600 XT: Chipset Model: ATY,RV360 Type: Display Bus: AGP Slot: SLOT-1 VRAM (Total): 128 MB Vendor: ATI (0x1002) Device ID: 0x4152 Revision ID: 0x0000 ROM Revision: 113-A13602-121 Displays: SyncMaster: Resolution: 1680 x 1050 @ 60 Hz Depth: 32-Bit Color Core Image: Software Main Display: Yes Mirror: Off Online: Yes Quartz Extreme: Not Supported Display Connector: Status: No Display Connected Serial-ATA Bus: ST3250823AS: Capacity: 232.89 GB Model: ST3250823AS Revision: 3.03 Serial Number: 3ND1GXN7 Removable Media: No Detachable Drive: No BSD Name: disk0 Protocol: ata Unit Number: 0 Socket Type: Serial-ATA Bay Name: "A (upper)" Mac OS 9 Drivers: No Partition Map Type: APM (Apple Partition Map) S.M.A.R.T. status: Verified Volumes: Boot: Capacity: 232.76 GB Available: 29.23 GB Writable: Yes File System: Journaled HFS+ BSD Name: disk0s3 Mount Point: / So, what's wrong? Is it a bad logic board, simultanious hard drive and CD drive failure, what? I tried zapping the PMU and PRAM, neither did anything. HELP!