Deathwind
08-04-04, 09:13 PM
System specs:
CPU: Intel P4 3.2GHz LGA775 (Prescott)
Mobo: Gigabyte GA-8I915G Pro 915G
RAM: 1GB (2x512MB) PC3200 Corsair Value Select
Primary HD: 160GB Samsung SATA HD
Case/PSU: Antec SX635BII
HSF: ThermalTake Tower112 HS + 2 silent CAT fans
I just got the Tower112 on the other night (switching over from the stock Intel HSF). At stock speeds, I got lower CPU temperatures under full load, from 65C with the stock cooler down to 53C with the Tower112. I did some overclocking last night using Gigabyte's EasyTune utility (all temps are at full load):
3.365GHz (5% OC) = 56C
3.521GHz (10% OC) = 58C
3.565GHz (11% OC) = 59C
3.607GHz (12% OC) = 59C
3.621GHz (13% OC) = 60C
At 3.6GHz+, I started getting intermittent Folding@Home crashes, so I decided to back it down to 3.521GHz, where it was mostly stable. Today, I used the EasyTune utilitie's "advanced" mode to bump up the voltage from the stock voltage of 1.38V up to 1.42V. I set the FSB to 220MHz FSB (x16 multiplier = 3.52GHz), and it automatically bumped the RAM up to 440MHz (400MHz stock, still running the stock voltage of 2.6V). I ran it under load for a while and everything seemed stable, but a little hotter (63C). I figured my RAM probably wasn't going to take much more speed, so I bumped it down in the utility to something like 365MHz (not sure on the 365MHz number exactly, but I could only choose from it or 440MHz with the FSB at 220, so I figure it was just changing the FSB:RAM ratio). I committed the change and the utility told me to reboot for it to take effect, so I did. Except, after I powered off, I was unable to get the computer to power back on. No fans start to spin up, no lights blink, no beeps, no monitor signal, no attempt to POST, nothing. So far I've tried:
-RAM in all possible combinations (including none)
-clearing the CMOS both with the mobo jumper and by unplugging the PSU and removing the CMOS battery for 5 minutes
-using the reset switch as a power switch
-disconnecting the PSU from everything and running it standalone (by putting a paperclip from the green wire on the ATX connector to a ground wire)
-connecting a known-working PSU and trying to power on
Most recently, after switching the PSU rocker to "on", I accidentally brushed my hand against the back of the PSU casing and got a pretty good electrical shock. I immediately switched off the rocker and unplugged the PSU, however after pulling the PSU from the computer case and running it standalone the PSU case does not appear to have an electric charge. The motherboard was installed properly with standoffs, so I don't think it was shorting to the case. I'd say the motherboard is probably the problem here, and if I can't get it working any other way it will be the first component I replace. Any other ideas as to what caused the failure or how I might try getting it running again?
CPU: Intel P4 3.2GHz LGA775 (Prescott)
Mobo: Gigabyte GA-8I915G Pro 915G
RAM: 1GB (2x512MB) PC3200 Corsair Value Select
Primary HD: 160GB Samsung SATA HD
Case/PSU: Antec SX635BII
HSF: ThermalTake Tower112 HS + 2 silent CAT fans
I just got the Tower112 on the other night (switching over from the stock Intel HSF). At stock speeds, I got lower CPU temperatures under full load, from 65C with the stock cooler down to 53C with the Tower112. I did some overclocking last night using Gigabyte's EasyTune utility (all temps are at full load):
3.365GHz (5% OC) = 56C
3.521GHz (10% OC) = 58C
3.565GHz (11% OC) = 59C
3.607GHz (12% OC) = 59C
3.621GHz (13% OC) = 60C
At 3.6GHz+, I started getting intermittent Folding@Home crashes, so I decided to back it down to 3.521GHz, where it was mostly stable. Today, I used the EasyTune utilitie's "advanced" mode to bump up the voltage from the stock voltage of 1.38V up to 1.42V. I set the FSB to 220MHz FSB (x16 multiplier = 3.52GHz), and it automatically bumped the RAM up to 440MHz (400MHz stock, still running the stock voltage of 2.6V). I ran it under load for a while and everything seemed stable, but a little hotter (63C). I figured my RAM probably wasn't going to take much more speed, so I bumped it down in the utility to something like 365MHz (not sure on the 365MHz number exactly, but I could only choose from it or 440MHz with the FSB at 220, so I figure it was just changing the FSB:RAM ratio). I committed the change and the utility told me to reboot for it to take effect, so I did. Except, after I powered off, I was unable to get the computer to power back on. No fans start to spin up, no lights blink, no beeps, no monitor signal, no attempt to POST, nothing. So far I've tried:
-RAM in all possible combinations (including none)
-clearing the CMOS both with the mobo jumper and by unplugging the PSU and removing the CMOS battery for 5 minutes
-using the reset switch as a power switch
-disconnecting the PSU from everything and running it standalone (by putting a paperclip from the green wire on the ATX connector to a ground wire)
-connecting a known-working PSU and trying to power on
Most recently, after switching the PSU rocker to "on", I accidentally brushed my hand against the back of the PSU casing and got a pretty good electrical shock. I immediately switched off the rocker and unplugged the PSU, however after pulling the PSU from the computer case and running it standalone the PSU case does not appear to have an electric charge. The motherboard was installed properly with standoffs, so I don't think it was shorting to the case. I'd say the motherboard is probably the problem here, and if I can't get it working any other way it will be the first component I replace. Any other ideas as to what caused the failure or how I might try getting it running again?