Re: Dual 2.0ghz G5 won't boot after being unplugged overnight....
The only thing I can think of is your system memory might need to be reseated or a stick or two (doubtfully all but that is a possibility as well) has become corrupted and needs to be replaced. I know if you go to apple.com/support and search 3 flashed and beeps along with your Power Macs model number (M9032) you should be able to dig around and find what that code signifies. If it does come up with system memory corruption then try taking out all but one brand of memory and then try booting it up. Just remember you need to keep the memory installed in equal pairs. In other words, if bank one DIMM slot one is 1GB then bank two DIMM slot 1 must also be the same 1GB. Don't mix RAM sizes, speeds, or even brand names until you discover if this is the problem or which sticks of RAM needs to be replaced. Other than that you might need to be persistent and keep trying different configurations. I have a PowerBook that can be very hard to boot up and it takes many tries to get it to post and boot correctly, which is why I never turn that machine off. I know the problem with it is the logic board needs to be re-flowed again. This is where it is gone over with magnifying equipment and the solder joints that lock in the GPU, memory sockets, and other components on to the board get micro-fractures from the heat of the CPU and GPU causing tiny air gaps in the components and breaks the connections. The tell-tail for this is certain things work (like for me a USB port) only when the logic board is flexed by grabbing the PowerBook by one corner and allowing the weight of the machine flex the board inside the body. Still I can't get myself to let it go because it was my first Apple aluminum laptop and it works fine as old as it is, and as long as I never boot it down and let it cool off. (just restart it once in a blue moon) To turn off the screen I just hit ctrl + shift + eject. It's been like this for 3 to 4 years on my coffee table and I use it all the time. On Wednesday, September 26, 2012 10:10:10 AM UTC-4, spilrules wrote: Yesterday we had a thunder storm and when leaving my office I not only turned off my power strip that our (G5 DP2.0ghz, 4.5gb ram) computer was plugged into, but I also unplugged the power cord from the strip/surge protector. I usually just turn off the surge protector when we have a storm, but after my father's G4 lost it's power supply after a bad storm a couple weeks ago, I decided to unplug the cord as well. This morning it chimed but soon stopped everything at the gray apple screen. I held in the power button to shut it down and after trying again it chimed and then the light above the power button now just blinks 3 times every 5 seconds or so. Then the chime went away and it just blinks 3 times as mentioned. I wanted to do a pram reset however it does not chime. I tried replacing the pram battery but it still does this blinking thing. I assume that is an indicator of the problem and am hopeful someone here can help me get back running again. Thanks in advance for your help! -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: Dual 2.0ghz G5 won't boot after being unplugged overnight....
did u also disconnect the internet connection? at home, the telephone line can carry a surge as well. On Sep 26, 2012, at 10:10 AM, spilrules wrote: Yesterday we had a thunder storm and when leaving my office I not only turned off my power strip that our (G5 DP2.0ghz, 4.5gb ram) computer was plugged into, but I also unplugged the power cord from the strip/surge protector. I usually just turn off the surge protector when we have a storm, but after my father's G4 lost it's power supply after a bad storm a couple weeks ago, I decided to unplug the cord as well. This morning it chimed but soon stopped everything at the gray apple screen. I held in the power button to shut it down and after trying again it chimed and then the light above the power button now just blinks 3 times every 5 seconds or so. Then the chime went away and it just blinks 3 times as mentioned. I wanted to do a pram reset however it does not chime. I tried replacing the pram battery but it still does this blinking thing. I assume that is an indicator of the problem and am hopeful someone here can help me get back running again. Thanks in advance for your help! -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Dual 2.0ghz G5 won't boot after being unplugged overnight....
Yesterday we had a thunder storm and when leaving my office I not only turned off my power strip that our (G5 DP2.0ghz, 4.5gb ram) computer was plugged into, but I also unplugged the power cord from the strip/surge protector. I usually just turn off the surge protector when we have a storm, but after my father's G4 lost it's power supply after a bad storm a couple weeks ago, I decided to unplug the cord as well. This morning it chimed but soon stopped everything at the gray apple screen. I held in the power button to shut it down and after trying again it chimed and then the light above the power button now just blinks 3 times every 5 seconds or so. Then the chime went away and it just blinks 3 times as mentioned. I wanted to do a pram reset however it does not chime. I tried replacing the pram battery but it still does this blinking thing. I assume that is an indicator of the problem and am hopeful someone here can help me get back running again. Thanks in advance for your help! -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: G5 won't boot
Try to boot OS X in single user mode. http://support.apple.com/kb/HT1492 -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
G5 won't boot
I have an early dual 2.5GHz G5 PowerMac with the following spec's dual 2.5GHz G5 CPU's Radeon 9650 video card stock video card that I swapped from my dual 2.7GHz G5 PowerMac which now has a FireGL X3 video card in it. 2gb RAM 250gb SATA hard drive SuperDrive I purchased this G5 as a partially working computer for parts, or repair. It ran fine, but the previous owner had confirmed that there was a motherboard fault which would only recognize the G5 CPU in one of the two sockets. The previous owner and myself had both tested by swapping the G5 CPU's from one socket to the other and confirmed that it was the same socket that was recognized as working each time, so I know that both G5 CPU's are working and planned on looking for a new motherboard to repair the system. While swapping the G5 CPU's from one side to the other, I noticed some corrosion around the circular metal plate that can be removed to check and add to the liquid cooling system, so I removed the corrosion, removed the plate and checked the coolant inside to make sure it was still full, resealed and reseated the metal plate and O-ring. This computer did not come with a hard drive, so to test it, I had previously taken the hard drive from my working dual 2.7GHz G5 PowerMac and installed it into this dual 2.5GHz G5 PowerMac. After the corrosion removal was complete, I re-assembled the dual 2.5GHz G5 PowerMac to test it before selling it to someone who is interested in replacing the motherboard himself. Now when I try to boot this dual 2.5GHz G5 PowerMac either from the hard drive, or from my Leopard install DVD, I get to the gray Apple logo screen and no further. The chime is normal and everything else appears to be the same as before, when it was running on just one G5 processor. Does anyone here know what causes a Mac to get to the Apple logo and just stop there with no error messages, and no other apparent problems that would give away what the problem is? If it was something drastic, I would think that it would not even get that far in the boot process. And why would it act this way when booting from the Install DVD? David -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
