02-11-2014 05:00 PM
Machine is P7-1370 (desktop).
Power Supply (original): Model DPS300AB-73A Part no. 667893-001, 300W, Delta Electronics
SPECCY and PC Wizard reported strange voltages:
5V -> 2.782V
-5V -> -8.88V
12V -> 8.88V
-12V -> -8.88V.
Same reports after I replaced the Delta with an Antec VP450 PSU.
Similar postings: Title "V core problem?" 06-04-2011 09:01 PM
Has anyone else seen strange voltage reports like these?
What kind of sensor measures the voltages?
Has HP messed up the sensors?
Has Foxconn messed up the sensors?
02-13-2014 08:51 AM - edited 02-13-2014 08:53 AM
There is a reporting/calculating issue with your PC.
The BACKUP-UPS battery voltage is incorrect as the battery replacements are 12V.
Are you running Windows 7?
02-13-2014 09:31 AM
OS is Windows 7 Home Premium Service Pack 1 64 bit
CPU is at 3.3 GHz
6 GB memory
IEEE 1394 board is the only extra board installed
Scans by Malwarebytes, Avast, and MS Security Essentials all happy
Machine runs fine, except...
- At boot after power-off, Windows startup hangs. Combinations of re-boot, CTRL-ALT-DEL, power cycle get Windows OK
- Black squares, about 1 cm, sprinkle here and there on the display when scrolling, disapper when display updated
- USB 3 ports occasionally disappear, but reappear after re-start
02-13-2014 09:46 AM
Perhaps that 1394 board is causing issues. I would remove it and see if you can get Windows to boot up in a normal fashion like when it was new.
02-13-2014 10:22 AM
The start-up and display issues pre-date the 1394 board (Vantec UGT-FW200).
But I noticed the voltage readings long after installing the 1394 board.
Pulling the board is a nuisance, so for now, I'll let it ride.
Maybe someone else with the same puzzles will see this post, and we can commiserate.
Thanks for your help!
02-13-2014 10:31 AM
I recommend that you pull the add in card along with any other hardware modifications and then clear the CMOS. You should not being having the statup up issues that you have indicated. Remove all devices except the keyboard, monitor and mouse. Check to be sure that the optical drive is empty of media. If you still have boot up issues then something may have be changed/modified on your PC. Backup your data and then use the HP recovery disks to bring your PC back to a factory day one condition.