Here's one for the brainiacs out there, and new to me.
I shut my system down normally the other night. It sat for a few hours before I tried to start it again. PSU fires up, fans spin up, CPU cooler lights up and spins a couple times, then the system shuts down. Nothing on the monitor, no beep codes, then the system starts again, same, thing, over and over. I let it run for 30 mins, but no go. Reset CMOS, tried again, same thing. I start ripping out components 1 by one, USB devices, all hard drives, DVD-RW, floppy, and Vid card - until its just MB, CPU, RAM and case switches. Same thing, no post, no beep codes.
Now I figures its the motherboard. So pull that out and replace it with a brand new P35-DS3P. Same thing. I replace the CPU with a new CPU (both E6750s). Same thing. I replace the Crucial Ballistix DDR2-800 with generic DDR2-800 and the system starts right up. I figure its licked. Set up Vista Ultimate on the system and do several reboots with no problems. Then I shut this down and go to bed. Next morning, same thing. No post, constant reboots, but after 10 or 20 it eventually starts. Reboots seem fine, but complete shut downs make the system constantly reboot until it eventually starts.
At this point I'm ready to pull what's left of my hair out. I put the old CPU in another system and it boots right up a couple dozen times, ruling out the CPU.
I put the old Crucial Ballistix in another system with an Intel board and got 3 beeps, which points to the memory. Problem is that this memory has never run at less than 2.1v and the Intel board has no setting for memory voltage. So not sure that really proves anything about the Crucial memory, but I find it hard to believe the brand new generic memory would be bad in the same way in the new P35-DS3P motherboard.
I even plug the entire system into an extension cord run into the garage to make sure we're not running too much from a single outlet (we have 3 computers and an all-in-one printer running from one outlet in the computer room normally).
Anyone ever seen a PSU go bad in this manner? I did try the DQ6 on an Antec PSU on the test bench with only CPU, RAM, and Vid card (no hard drive or optical drives) and same thing, just kept rebooting without post. But I spose the MB could now be shot from whatever caused it to go in the first place.
The only other thing I can think of would be the case (Thermaltake Kandalf) power switch itself, somehow shorting out or under-volting the boards? Anyone heard of such a thing before?
Any and all ideas are appreciated.
Original system:
Kandalf (18 mos old)
E6750 @ 3.6GHz (18 mos old)
Crucial Ballistix DDR2-800 @ 900MHz 4-4-4-12, 2.1v (6 mos old)
OCZ Powerstream 600w (18 mos old)
965P-DQ6 (18 mos old)
Leadtek PX7900GTX TDH Extreme (18 mos old)
6 hard drives, 2 x 2 HDs on RAID 0 arrays, 2 just by themselves, all on ICH9R controller (various ages from 1 to 3 yrs old)
Current system:
Kandalf (18 mos old)
E6750 @ stock settings (brand new)
Generic RAM (brand new)
OCZ Powerstream 600w (18 mos old)
P35-DS3P (brand new)
Leadtek PX7900GTX TDH Extreme (18 mos old)
Single hard drive with Vista (brand new)
I shut my system down normally the other night. It sat for a few hours before I tried to start it again. PSU fires up, fans spin up, CPU cooler lights up and spins a couple times, then the system shuts down. Nothing on the monitor, no beep codes, then the system starts again, same, thing, over and over. I let it run for 30 mins, but no go. Reset CMOS, tried again, same thing. I start ripping out components 1 by one, USB devices, all hard drives, DVD-RW, floppy, and Vid card - until its just MB, CPU, RAM and case switches. Same thing, no post, no beep codes.
Now I figures its the motherboard. So pull that out and replace it with a brand new P35-DS3P. Same thing. I replace the CPU with a new CPU (both E6750s). Same thing. I replace the Crucial Ballistix DDR2-800 with generic DDR2-800 and the system starts right up. I figure its licked. Set up Vista Ultimate on the system and do several reboots with no problems. Then I shut this down and go to bed. Next morning, same thing. No post, constant reboots, but after 10 or 20 it eventually starts. Reboots seem fine, but complete shut downs make the system constantly reboot until it eventually starts.
At this point I'm ready to pull what's left of my hair out. I put the old CPU in another system and it boots right up a couple dozen times, ruling out the CPU.
I put the old Crucial Ballistix in another system with an Intel board and got 3 beeps, which points to the memory. Problem is that this memory has never run at less than 2.1v and the Intel board has no setting for memory voltage. So not sure that really proves anything about the Crucial memory, but I find it hard to believe the brand new generic memory would be bad in the same way in the new P35-DS3P motherboard.
I even plug the entire system into an extension cord run into the garage to make sure we're not running too much from a single outlet (we have 3 computers and an all-in-one printer running from one outlet in the computer room normally).
Anyone ever seen a PSU go bad in this manner? I did try the DQ6 on an Antec PSU on the test bench with only CPU, RAM, and Vid card (no hard drive or optical drives) and same thing, just kept rebooting without post. But I spose the MB could now be shot from whatever caused it to go in the first place.
The only other thing I can think of would be the case (Thermaltake Kandalf) power switch itself, somehow shorting out or under-volting the boards? Anyone heard of such a thing before?
Any and all ideas are appreciated.
Original system:
Kandalf (18 mos old)
E6750 @ 3.6GHz (18 mos old)
Crucial Ballistix DDR2-800 @ 900MHz 4-4-4-12, 2.1v (6 mos old)
OCZ Powerstream 600w (18 mos old)
965P-DQ6 (18 mos old)
Leadtek PX7900GTX TDH Extreme (18 mos old)
6 hard drives, 2 x 2 HDs on RAID 0 arrays, 2 just by themselves, all on ICH9R controller (various ages from 1 to 3 yrs old)
Current system:
Kandalf (18 mos old)
E6750 @ stock settings (brand new)
Generic RAM (brand new)
OCZ Powerstream 600w (18 mos old)
P35-DS3P (brand new)
Leadtek PX7900GTX TDH Extreme (18 mos old)
Single hard drive with Vista (brand new)