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HP Pavilion 761n Will Not Boot
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Original Message
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Name: NC Dad
Date: November 2, 2004 at 12:50:29 Pacific
Subject: HP Pavilion 761n Will Not BootOS: WinXP HomeCPU/Ram: 1.67Ghz/512MB |
Comment: Problem:
System will not boot. Keyboard LEDs light up when initial power provided to system, then does not function after that point. Nothing appears on monitor; monitor is good, works with other systems. Floppy boot not possible since boot process doesn't get that far. Fans work. Hear a couple of beeps, maybe 3, then nothing. Before posting, I have already isolated modem PCI card, USB add-on PCI card (for built-in USB ports in chassis front), CD-RW, DVD, floppy, HD, & stick of RAM with no change in system response. Any assistance is appreciated. Please advise also if similar topic exists for this HP product. Thanks! Thank you!!
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Response Number 1
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Name: fordman
Date: November 2, 2004 at 13:26:28 Pacific
Subject: HP Pavilion 761n Will Not Boot |
Reply: (edit)Three beeps is bad. This may be of some interest to you: http://www.computerhope.com/beep.htm Always looking for techs:
http://www.protonic.com/volunteer.php?PHPSESSID=25e06d90d2153c5e0b49d9c798c3024d
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Response Number 2
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Name: NC Dad
Date: November 2, 2004 at 13:43:26 Pacific
Subject: HP Pavilion 761n Will Not Boot |
Reply: (edit)Thanks fordman! Good link. Will investigage further & compare beeps. In reviewing other trbls in this forum, I found another link on PSU tsting (http://www.ochardware.com/articles/psuvolt/psuvolt2.html) that I'll try too. A lot of good info in this forum. I'll report back what I find, probably tomorrow sometime. Thank you!!
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Response Number 3
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Name: NC Dad
Date: November 3, 2004 at 13:47:49 Pacific
Subject: HP Pavilion 761n Will Not Boot |
Reply: (edit)Hi all, Here are the preliminary results of my power tests, using Fluke multimeter. I was only able to get volt measurements. Wasn't able to get any Amps. With the jumper in place, the PSU kept shutting down when I inserted the leads, using 10A & Common on Fluke. The milliAmp option didn't provide any readings & the PSU didn't shut down either. What are your thoughts? Thanks!
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FYI:
PSU Specs -
Type: Bestec PSU/Model #: ATX-1956D (Output Rating 200W Max)
Wire Info -
Red: +5V/23A
Orange: +3.3V/10A
Yellow: +12V/12A
Black: Ground
Purple: +5VSB/2A
Gray: Power Good (?)
Blue: -12V/0.8A
+++++++++
P1 (MB Pwr Connection)
Top Row (1-10)
1 - 3.3
2 - 11.873
3&4 - jumper positions (Floppy LED on & PSU fan on)
5 - Grnd
6 - Grnd
7 - Grnd
8 - Empty
9 - 5.09
10 - 5.09
Bottom Row (1-10)
1 - 3.3
2 - 3.3
3 - Grnd
4 - 5.090
5 - Grnd
6 - 5.090
7 - Grnd
8 - 4.994
9 - 5.011
10 - 11.928 P1 Amps
Red - ? (No continuity)
Yellow - ? (Continuity Exists)
Orange - ?
Purple - ?
Blue - ?
***
P2
Red - 5.154v/? A
Yellow - 11.624v/? A
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P3
Red - 5.154v/? A
Yellow - 11.624v/? A
***
P4
Red - 5.154v/? A
Yellow - 11.624v/? A
***
P5
Red - 5.154v/? A
Yellow - 11.624v/? A Thank you!!
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Response Number 4
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Name: NC Dad
Date: November 4, 2004 at 09:09:53 Pacific
Subject: HP Pavilion 761n Will Not Boot |
Reply: (edit)Hi all, I purchased a new PSU today. After connecting only MB, HDD, & floppy, I turned new PSU on and MB did not boot. Situation still the same. Any other additional thoughts? Also, I'm not getting any POST beeps. I hear a soft click, maybe HDD or CPU activity? However, it's pretty quiet now. Thank you!!
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Response Number 5
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Name: NC Dad
Date: November 4, 2004 at 09:15:10 Pacific
Subject: HP Pavilion 761n Will Not Boot |
Reply: (edit)In addition, MB seems to be routing power. The CPU fan is operational as well as the secondary case fan. Could this be a CMOS battery trouble? Thank you!!
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