ITPS + PW70A = Random Shutdowns / Reboots

**tbird2340** · 10-06-2004, 09:20 AM

I have a PW70A coupled with an ITPS. Sometimes my PC just shuts off (more when my truck is off then on). Sometimes when I'm working on my PC with my truck off it will work fine. Other times it will just reboot itself. I've had this happen a handful of times while driving as well.

This is what I have powered off it: 7" Lilli, 2.5" HDD, Slimline DVD/CDRW, USB Hub w/ USB GPS, WIFI, and Bluetooth.

Any ideas? I did that power simulator over at mini-box.com and it shows I'm under 60W total under DVD load.

2x20LCD: 0
40mmFAN: 0
USBDevice: 4
SLIMCD: 1
2.5 Drive: 1
Lilliput

3.3V | 5V | 5V SB | 12V
11.39 | 31.88 | 0.70 | 11.05 = 55.02

**strohj** · 10-06-2004, 09:31 AM

I had this issue.. and it turned out to be a bad stick of Ram..

Check your event log in windows XP to get information on the reboots... that will help you track it down

**tbird2340** · 10-06-2004, 09:35 AM

Will check at lunch.. Thanks for the suggestion.

**tbird2340** · 10-18-2004, 09:46 AM

Ok... I'm only getting DCOM and COM+ errors in my eventvwr.. I don't think that could cause shut downs??

It did it TWICE today.. Just totally shut off!! Help... Please!!!

**Confused** · 10-18-2004, 09:53 AM

Battery voltage is dropping below 13.3V therefore your power supply (and computer) is receiving less than 12V so it's crashing.

**ptk** · 10-19-2004, 12:26 AM

Yup

think this has b een discussed numerous times

ITPS drops voltages a fair bit
so your PSU is receiving less than 12V when your engine is off.
so provided that your PSU can maintain the 12V line even when the input is less than 12V, your MB will drop dead, more so if you are drawing more current during CPU intensive or harddisk activities

**tbird2340** · 10-19-2004, 07:45 AM

Well this happens when the truck is running too. Yesterday the two times it happened my truck was on and I had been driving for a while.

Is there no solution for this?

Thanks!